course-server/public/vendor/libs/jscolor.js

/**
 * jscolor - JavaScript Color Picker
 *
 * @link    http://jscolor.com
 * @license For open source use: GPLv3
 *          For commercial use: JSColor Commercial License
 * @author  Jan Odvarko
 *
 * See usage examples at http://jscolor.com/examples/
 */


"use strict";


if (!window.jscolor) {
    window.jscolor = (function () {


        var jsc = {


            register: function () {
                jsc.attachDOMReadyEvent(jsc.init);
                jsc.attachEvent(document, 'mousedown', jsc.onDocumentMouseDown);
                jsc.attachEvent(document, 'touchstart', jsc.onDocumentTouchStart);
                jsc.attachEvent(window, 'resize', jsc.onWindowResize);
            },


            init: function () {
                if (jsc.jscolor.lookupClass) {
                    jsc.jscolor.installByClassName(jsc.jscolor.lookupClass);
                }
            },


            tryInstallOnElements: function (elms, className) {
                var matchClass = new RegExp('(^|\\s)(' + className + ')(\\s*(\\{[^}]*\\})|\\s|$)', 'i');

                for (var i = 0; i < elms.length; i += 1) {
                    if (elms[i].type !== undefined && elms[i].type.toLowerCase() == 'color') {
                        if (jsc.isColorAttrSupported) {
                            // skip inputs of type 'color' if supported by the browser
                            continue;
                        }
                    }
                    var m;
                    if (!elms[i].jscolor && elms[i].className && (m = elms[i].className.match(matchClass))) {
                        var targetElm = elms[i];
                        var optsStr = null;

                        var dataOptions = jsc.getDataAttr(targetElm, 'jscolor');
                        if (dataOptions !== null) {
                            optsStr = dataOptions;
                        } else if (m[4]) {
                            optsStr = m[4];
                        }

                        var opts = {};
                        if (optsStr) {
                            try {
                                opts = (new Function('return (' + optsStr + ')'))();
                            } catch (eParseError) {
                                jsc.warn('Error parsing jscolor options: ' + eParseError + ':\n' + optsStr);
                            }
                        }
                        targetElm.jscolor = new jsc.jscolor(targetElm, opts);
                    }
                }
            },


            isColorAttrSupported: (function () {
                var elm = document.createElement('input');
                if (elm.setAttribute) {
                    elm.setAttribute('type', 'color');
                    if (elm.type.toLowerCase() == 'color') {
                        return true;
                    }
                }
                return false;
            })(),


            isCanvasSupported: (function () {
                var elm = document.createElement('canvas');
                return !!(elm.getContext && elm.getContext('2d'));
            })(),


            fetchElement: function (mixed) {
                return typeof mixed === 'string' ? document.getElementById(mixed) : mixed;
            },


            isElementType: function (elm, type) {
                return elm.nodeName.toLowerCase() === type.toLowerCase();
            },


            getDataAttr: function (el, name) {
                var attrName = 'data-' + name;
                var attrValue = el.getAttribute(attrName);
                if (attrValue !== null) {
                    return attrValue;
                }
                return null;
            },


            attachEvent: function (el, evnt, func) {
                if (el.addEventListener) {
                    el.addEventListener(evnt, func, false);
                } else if (el.attachEvent) {
                    el.attachEvent('on' + evnt, func);
                }
            },


            detachEvent: function (el, evnt, func) {
                if (el.removeEventListener) {
                    el.removeEventListener(evnt, func, false);
                } else if (el.detachEvent) {
                    el.detachEvent('on' + evnt, func);
                }
            },


            _attachedGroupEvents: {},


            attachGroupEvent: function (groupName, el, evnt, func) {
                if (!jsc._attachedGroupEvents.hasOwnProperty(groupName)) {
                    jsc._attachedGroupEvents[groupName] = [];
                }
                jsc._attachedGroupEvents[groupName].push([el, evnt, func]);
                jsc.attachEvent(el, evnt, func);
            },


            detachGroupEvents: function (groupName) {
                if (jsc._attachedGroupEvents.hasOwnProperty(groupName)) {
                    for (var i = 0; i < jsc._attachedGroupEvents[groupName].length; i += 1) {
                        var evt = jsc._attachedGroupEvents[groupName][i];
                        jsc.detachEvent(evt[0], evt[1], evt[2]);
                    }
                    delete jsc._attachedGroupEvents[groupName];
                }
            },


            attachDOMReadyEvent: function (func) {
                var fired = false;
                var fireOnce = function () {
                    if (!fired) {
                        fired = true;
                        func();
                    }
                };

                if (document.readyState === 'complete') {
                    setTimeout(fireOnce, 1); // async
                    return;
                }

                if (document.addEventListener) {
                    document.addEventListener('DOMContentLoaded', fireOnce, false);

                    // Fallback
                    window.addEventListener('load', fireOnce, false);

                } else if (document.attachEvent) {
                    // IE
                    document.attachEvent('onreadystatechange', function () {
                        if (document.readyState === 'complete') {
                            document.detachEvent('onreadystatechange', arguments.callee);
                            fireOnce();
                        }
                    })

                    // Fallback
                    window.attachEvent('onload', fireOnce);

                    // IE7/8
                    if (document.documentElement.doScroll && window == window.top) {
                        var tryScroll = function () {
                            if (!document.body) {
                                return;
                            }
                            try {
                                document.documentElement.doScroll('left');
                                fireOnce();
                            } catch (e) {
                                setTimeout(tryScroll, 1);
                            }
                        };
                        tryScroll();
                    }
                }
            },


            warn: function (msg) {
                if (window.console && window.console.warn) {
                    window.console.warn(msg);
                }
            },


            preventDefault: function (e) {
                if (e.preventDefault) {
                    e.preventDefault();
                }
                e.returnValue = false;
            },


            captureTarget: function (target) {
                // IE
                if (target.setCapture) {
                    jsc._capturedTarget = target;
                    jsc._capturedTarget.setCapture();
                }
            },


            releaseTarget: function () {
                // IE
                if (jsc._capturedTarget) {
                    jsc._capturedTarget.releaseCapture();
                    jsc._capturedTarget = null;
                }
            },


            fireEvent: function (el, evnt) {
                if (!el) {
                    return;
                }
                if (document.createEvent) {
                    var ev = document.createEvent('HTMLEvents');
                    ev.initEvent(evnt, true, true);
                    el.dispatchEvent(ev);
                } else if (document.createEventObject) {
                    var ev = document.createEventObject();
                    el.fireEvent('on' + evnt, ev);
                } else if (el['on' + evnt]) { // alternatively use the traditional event model
                    el['on' + evnt]();
                }
            },


            classNameToList: function (className) {
                return className.replace(/^\s+|\s+$/g, '').split(/\s+/);
            },


            // The className parameter (str) can only contain a single class name
            hasClass: function (elm, className) {
                if (!className) {
                    return false;
                }
                return -1 != (' ' + elm.className.replace(/\s+/g, ' ') + ' ').indexOf(' ' + className + ' ');
            },


            // The className parameter (str) can contain multiple class names separated by whitespace
            setClass: function (elm, className) {
                var classList = jsc.classNameToList(className);
                for (var i = 0; i < classList.length; i += 1) {
                    if (!jsc.hasClass(elm, classList[i])) {
                        elm.className += (elm.className ? ' ' : '') + classList[i];
                    }
                }
            },


            // The className parameter (str) can contain multiple class names separated by whitespace
            unsetClass: function (elm, className) {
                var classList = jsc.classNameToList(className);
                for (var i = 0; i < classList.length; i += 1) {
                    var repl = new RegExp(
                        '^\\s*' + classList[i] + '\\s*|' +
                        '\\s*' + classList[i] + '\\s*$|' +
                        '\\s+' + classList[i] + '(\\s+)',
                        'g'
                    );
                    elm.className = elm.className.replace(repl, '$1');
                }
            },


            getStyle: function (elm) {
                return window.getComputedStyle ? window.getComputedStyle(elm) : elm.currentStyle;
            },


            setStyle: (function () {
                var helper = document.createElement('div');
                var getSupportedProp = function (names) {
                    for (var i = 0; i < names.length; i += 1) {
                        if (names[i] in helper.style) {
                            return names[i];
                        }
                    }
                };
                var props = {
                    borderRadius: getSupportedProp(['borderRadius', 'MozBorderRadius', 'webkitBorderRadius']),
                    boxShadow: getSupportedProp(['boxShadow', 'MozBoxShadow', 'webkitBoxShadow'])
                };
                return function (elm, prop, value) {
                    switch (prop.toLowerCase()) {
                        case 'opacity':
                            var alphaOpacity = Math.round(parseFloat(value) * 100);
                            elm.style.opacity = value;
                            elm.style.filter = 'alpha(opacity=' + alphaOpacity + ')';
                            break;
                        default:
                            elm.style[props[prop]] = value;
                            break;
                    }
                };
            })(),


            setBorderRadius: function (elm, value) {
                jsc.setStyle(elm, 'borderRadius', value || '0');
            },


            setBoxShadow: function (elm, value) {
                jsc.setStyle(elm, 'boxShadow', value || 'none');
            },


            getElementPos: function (e, relativeToViewport) {
                var x = 0, y = 0;
                var rect = e.getBoundingClientRect();
                x = rect.left;
                y = rect.top;
                if (!relativeToViewport) {
                    var viewPos = jsc.getViewPos();
                    x += viewPos[0];
                    y += viewPos[1];
                }
                return [x, y];
            },


            getElementSize: function (e) {
                return [e.offsetWidth, e.offsetHeight];
            },


            // get pointer's X/Y coordinates relative to viewport
            getAbsPointerPos: function (e) {
                if (!e) {
                    e = window.event;
                }
                var x = 0, y = 0;
                if (typeof e.changedTouches !== 'undefined' && e.changedTouches.length) {
                    // touch devices
                    x = e.changedTouches[0].clientX;
                    y = e.changedTouches[0].clientY;
                } else if (typeof e.clientX === 'number') {
                    x = e.clientX;
                    y = e.clientY;
                }
                return {x: x, y: y};
            },


            // get pointer's X/Y coordinates relative to target element
            getRelPointerPos: function (e) {
                if (!e) {
                    e = window.event;
                }
                var target = e.target || e.srcElement;
                var targetRect = target.getBoundingClientRect();

                var x = 0, y = 0;

                var clientX = 0, clientY = 0;
                if (typeof e.changedTouches !== 'undefined' && e.changedTouches.length) {
                    // touch devices
                    clientX = e.changedTouches[0].clientX;
                    clientY = e.changedTouches[0].clientY;
                } else if (typeof e.clientX === 'number') {
                    clientX = e.clientX;
                    clientY = e.clientY;
                }

                x = clientX - targetRect.left;
                y = clientY - targetRect.top;
                return {x: x, y: y};
            },


            getViewPos: function () {
                var doc = document.documentElement;
                return [
                    (window.pageXOffset || doc.scrollLeft) - (doc.clientLeft || 0),
                    (window.pageYOffset || doc.scrollTop) - (doc.clientTop || 0)
                ];
            },


            getViewSize: function () {
                var doc = document.documentElement;
                return [
                    (window.innerWidth || doc.clientWidth),
                    (window.innerHeight || doc.clientHeight),
                ];
            },


            redrawPosition: function () {

                if (jsc.picker && jsc.picker.owner) {
                    var thisObj = jsc.picker.owner;

                    var tp, vp;

                    if (thisObj.fixed) {
                        // Fixed elements are positioned relative to viewport,
                        // therefore we can ignore the scroll offset
                        tp = jsc.getElementPos(thisObj.targetElement, true); // target pos
                        vp = [0, 0]; // view pos
                    } else {
                        tp = jsc.getElementPos(thisObj.targetElement); // target pos
                        vp = jsc.getViewPos(); // view pos
                    }

                    var ts = jsc.getElementSize(thisObj.targetElement); // target size
                    var vs = jsc.getViewSize(); // view size
                    var ps = jsc.getPickerOuterDims(thisObj); // picker size
                    var a, b, c;
                    switch (thisObj.position.toLowerCase()) {
                        case 'left':
                            a = 1;
                            b = 0;
                            c = -1;
                            break;
                        case 'right':
                            a = 1;
                            b = 0;
                            c = 1;
                            break;
                        case 'top':
                            a = 0;
                            b = 1;
                            c = -1;
                            break;
                        default:
                            a = 0;
                            b = 1;
                            c = 1;
                            break;
                    }
                    var l = (ts[b] + ps[b]) / 2;

                    // compute picker position
                    if (!thisObj.smartPosition) {
                        var pp = [
                            tp[a],
                            tp[b] + ts[b] - l + l * c
                        ];
                    } else {
                        var pp = [
                            -vp[a] + tp[a] + ps[a] > vs[a] ?
                                (-vp[a] + tp[a] + ts[a] / 2 > vs[a] / 2 && tp[a] + ts[a] - ps[a] >= 0 ? tp[a] + ts[a] - ps[a] : tp[a]) :
                                tp[a],
                            -vp[b] + tp[b] + ts[b] + ps[b] - l + l * c > vs[b] ?
                                (-vp[b] + tp[b] + ts[b] / 2 > vs[b] / 2 && tp[b] + ts[b] - l - l * c >= 0 ? tp[b] + ts[b] - l - l * c : tp[b] + ts[b] - l + l * c) :
                                (tp[b] + ts[b] - l + l * c >= 0 ? tp[b] + ts[b] - l + l * c : tp[b] + ts[b] - l - l * c)
                        ];
                    }

                    var x = pp[a];
                    var y = pp[b];
                    var positionValue = thisObj.fixed ? 'fixed' : 'absolute';
                    var contractShadow =
                        (pp[0] + ps[0] > tp[0] || pp[0] < tp[0] + ts[0]) &&
                        (pp[1] + ps[1] < tp[1] + ts[1]);

                    jsc._drawPosition(thisObj, x, y, positionValue, contractShadow);
                }
            },


            _drawPosition: function (thisObj, x, y, positionValue, contractShadow) {
                var vShadow = contractShadow ? 0 : thisObj.shadowBlur; // px

                jsc.picker.wrap.style.position = positionValue;
                jsc.picker.wrap.style.left = x + 'px';
                jsc.picker.wrap.style.top = y + 'px';


                jsc.setBoxShadow(
                    jsc.picker.boxS,
                    thisObj.shadow ?
                        new jsc.BoxShadow(0, vShadow, thisObj.shadowBlur, 0, thisObj.shadowColor) :
                        null);
            },


            getPickerDims: function (thisObj) {
                var displaySlider = !!jsc.getSliderComponent(thisObj);
                var dims = [
                    2 * thisObj.insetWidth + 2 * thisObj.padding + thisObj.width +
                    (displaySlider ? 2 * thisObj.insetWidth + jsc.getPadToSliderPadding(thisObj) + thisObj.sliderSize : 0),
                    2 * thisObj.insetWidth + 2 * thisObj.padding + thisObj.height +
                    (thisObj.closable ? 2 * thisObj.insetWidth + thisObj.padding + thisObj.buttonHeight : 0)
                ];
                return dims;
            },


            getPickerOuterDims: function (thisObj) {
                var dims = jsc.getPickerDims(thisObj);
                return [
                    dims[0] + 2 * thisObj.borderWidth,
                    dims[1] + 2 * thisObj.borderWidth
                ];
            },


            getPadToSliderPadding: function (thisObj) {
                return Math.max(thisObj.padding, 1.5 * (2 * thisObj.pointerBorderWidth + thisObj.pointerThickness));
            },


            getPadYComponent: function (thisObj) {
                switch (thisObj.mode.charAt(1).toLowerCase()) {
                    case 'v':
                        return 'v';
                        break;
                }
                return 's';
            },


            getSliderComponent: function (thisObj) {
                if (thisObj.mode.length > 2) {
                    switch (thisObj.mode.charAt(2).toLowerCase()) {
                        case 's':
                            return 's';
                            break;
                        case 'v':
                            return 'v';
                            break;
                    }
                }
                return null;
            },


            onDocumentMouseDown: function (e) {
                if (!e) {
                    e = window.event;
                }
                var target = e.target || e.srcElement;

                if (target._jscLinkedInstance) {
                    if (target._jscLinkedInstance.showOnClick) {
                        target._jscLinkedInstance.show();
                    }
                } else if (target._jscControlName) {
                    jsc.onControlPointerStart(e, target, target._jscControlName, 'mouse');
                } else {
                    // Mouse is outside the picker controls -> hide the color picker!
                    if (jsc.picker && jsc.picker.owner) {
                        jsc.picker.owner.hide();
                    }
                }
            },


            onDocumentTouchStart: function (e) {
                if (!e) {
                    e = window.event;
                }
                var target = e.target || e.srcElement;

                if (target._jscLinkedInstance) {
                    if (target._jscLinkedInstance.showOnClick) {
                        target._jscLinkedInstance.show();
                    }
                } else if (target._jscControlName) {
                    jsc.onControlPointerStart(e, target, target._jscControlName, 'touch');
                } else {
                    if (jsc.picker && jsc.picker.owner) {
                        jsc.picker.owner.hide();
                    }
                }
            },


            onWindowResize: function (e) {
                jsc.redrawPosition();
            },


            onParentScroll: function (e) {
                // hide the picker when one of the parent elements is scrolled
                if (jsc.picker && jsc.picker.owner) {
                    jsc.picker.owner.hide();
                }
            },


            _pointerMoveEvent: {
                mouse: 'mousemove',
                touch: 'touchmove'
            },
            _pointerEndEvent: {
                mouse: 'mouseup',
                touch: 'touchend'
            },


            _pointerOrigin: null,
            _capturedTarget: null,


            onControlPointerStart: function (e, target, controlName, pointerType) {
                var thisObj = target._jscInstance;

                jsc.preventDefault(e);
                jsc.captureTarget(target);

                var registerDragEvents = function (doc, offset) {
                    jsc.attachGroupEvent('drag', doc, jsc._pointerMoveEvent[pointerType],
                        jsc.onDocumentPointerMove(e, target, controlName, pointerType, offset));
                    jsc.attachGroupEvent('drag', doc, jsc._pointerEndEvent[pointerType],
                        jsc.onDocumentPointerEnd(e, target, controlName, pointerType));
                };

                registerDragEvents(document, [0, 0]);

                if (window.parent && window.frameElement) {
                    var rect = window.frameElement.getBoundingClientRect();
                    var ofs = [-rect.left, -rect.top];
                    registerDragEvents(window.parent.window.document, ofs);
                }

                var abs = jsc.getAbsPointerPos(e);
                var rel = jsc.getRelPointerPos(e);
                jsc._pointerOrigin = {
                    x: abs.x - rel.x,
                    y: abs.y - rel.y
                };

                switch (controlName) {
                    case 'pad':
                        // if the slider is at the bottom, move it up
                        switch (jsc.getSliderComponent(thisObj)) {
                            case 's':
                                if (thisObj.hsv[1] === 0) {
                                    thisObj.fromHSV(null, 100, null);
                                }
                                ;
                                break;
                            case 'v':
                                if (thisObj.hsv[2] === 0) {
                                    thisObj.fromHSV(null, null, 100);
                                }
                                ;
                                break;
                        }
                        jsc.setPad(thisObj, e, 0, 0);
                        break;

                    case 'sld':
                        jsc.setSld(thisObj, e, 0);
                        break;
                }

                jsc.dispatchFineChange(thisObj);
            },


            onDocumentPointerMove: function (e, target, controlName, pointerType, offset) {
                return function (e) {
                    var thisObj = target._jscInstance;
                    switch (controlName) {
                        case 'pad':
                            if (!e) {
                                e = window.event;
                            }
                            jsc.setPad(thisObj, e, offset[0], offset[1]);
                            jsc.dispatchFineChange(thisObj);
                            break;

                        case 'sld':
                            if (!e) {
                                e = window.event;
                            }
                            jsc.setSld(thisObj, e, offset[1]);
                            jsc.dispatchFineChange(thisObj);
                            break;
                    }
                }
            },


            onDocumentPointerEnd: function (e, target, controlName, pointerType) {
                return function (e) {
                    var thisObj = target._jscInstance;
                    jsc.detachGroupEvents('drag');
                    jsc.releaseTarget();
                    // Always dispatch changes after detaching outstanding mouse handlers,
                    // in case some user interaction will occur in user's onchange callback
                    // that would intrude with current mouse events
                    jsc.dispatchChange(thisObj);
                };
            },


            dispatchChange: function (thisObj) {
                if (thisObj.valueElement) {
                    if (jsc.isElementType(thisObj.valueElement, 'input')) {
                        jsc.fireEvent(thisObj.valueElement, 'change');
                    }
                }
            },


            dispatchFineChange: function (thisObj) {
                if (thisObj.onFineChange) {
                    var callback;
                    if (typeof thisObj.onFineChange === 'string') {
                        callback = new Function(thisObj.onFineChange);
                    } else {
                        callback = thisObj.onFineChange;
                    }
                    callback.call(thisObj);
                }
            },


            setPad: function (thisObj, e, ofsX, ofsY) {
                var pointerAbs = jsc.getAbsPointerPos(e);
                var x = ofsX + pointerAbs.x - jsc._pointerOrigin.x - thisObj.padding - thisObj.insetWidth;
                var y = ofsY + pointerAbs.y - jsc._pointerOrigin.y - thisObj.padding - thisObj.insetWidth;

                var xVal = x * (360 / (thisObj.width - 1));
                var yVal = 100 - (y * (100 / (thisObj.height - 1)));

                switch (jsc.getPadYComponent(thisObj)) {
                    case 's':
                        thisObj.fromHSV(xVal, yVal, null, jsc.leaveSld);
                        break;
                    case 'v':
                        thisObj.fromHSV(xVal, null, yVal, jsc.leaveSld);
                        break;
                }
            },


            setSld: function (thisObj, e, ofsY) {
                var pointerAbs = jsc.getAbsPointerPos(e);
                var y = ofsY + pointerAbs.y - jsc._pointerOrigin.y - thisObj.padding - thisObj.insetWidth;

                var yVal = 100 - (y * (100 / (thisObj.height - 1)));

                switch (jsc.getSliderComponent(thisObj)) {
                    case 's':
                        thisObj.fromHSV(null, yVal, null, jsc.leavePad);
                        break;
                    case 'v':
                        thisObj.fromHSV(null, null, yVal, jsc.leavePad);
                        break;
                }
            },


            _vmlNS: 'jsc_vml_',
            _vmlCSS: 'jsc_vml_css_',
            _vmlReady: false,


            initVML: function () {
                if (!jsc._vmlReady) {
                    // init VML namespace
                    var doc = document;
                    if (!doc.namespaces[jsc._vmlNS]) {
                        doc.namespaces.add(jsc._vmlNS, 'urn:schemas-microsoft-com:vml');
                    }
                    if (!doc.styleSheets[jsc._vmlCSS]) {
                        var tags = ['shape', 'shapetype', 'group', 'background', 'path', 'formulas', 'handles', 'fill', 'stroke', 'shadow', 'textbox', 'textpath', 'imagedata', 'line', 'polyline', 'curve', 'rect', 'roundrect', 'oval', 'arc', 'image'];
                        var ss = doc.createStyleSheet();
                        ss.owningElement.id = jsc._vmlCSS;
                        for (var i = 0; i < tags.length; i += 1) {
                            ss.addRule(jsc._vmlNS + '\\:' + tags[i], 'behavior:url(#default#VML);');
                        }
                    }
                    jsc._vmlReady = true;
                }
            },


            createPalette: function () {

                var paletteObj = {
                    elm: null,
                    draw: null
                };

                if (jsc.isCanvasSupported) {
                    // Canvas implementation for modern browsers

                    var canvas = document.createElement('canvas');
                    var ctx = canvas.getContext('2d');

                    var drawFunc = function (width, height, type) {
                        canvas.width = width;
                        canvas.height = height;

                        ctx.clearRect(0, 0, canvas.width, canvas.height);

                        var hGrad = ctx.createLinearGradient(0, 0, canvas.width, 0);
                        hGrad.addColorStop(0 / 6, '#F00');
                        hGrad.addColorStop(1 / 6, '#FF0');
                        hGrad.addColorStop(2 / 6, '#0F0');
                        hGrad.addColorStop(3 / 6, '#0FF');
                        hGrad.addColorStop(4 / 6, '#00F');
                        hGrad.addColorStop(5 / 6, '#F0F');
                        hGrad.addColorStop(6 / 6, '#F00');

                        ctx.fillStyle = hGrad;
                        ctx.fillRect(0, 0, canvas.width, canvas.height);

                        var vGrad = ctx.createLinearGradient(0, 0, 0, canvas.height);
                        switch (type.toLowerCase()) {
                            case 's':
                                vGrad.addColorStop(0, 'rgba(255,255,255,0)');
                                vGrad.addColorStop(1, 'rgba(255,255,255,1)');
                                break;
                            case 'v':
                                vGrad.addColorStop(0, 'rgba(0,0,0,0)');
                                vGrad.addColorStop(1, 'rgba(0,0,0,1)');
                                break;
                        }
                        ctx.fillStyle = vGrad;
                        ctx.fillRect(0, 0, canvas.width, canvas.height);
                    };

                    paletteObj.elm = canvas;
                    paletteObj.draw = drawFunc;

                } else {
                    // VML fallback for IE 7 and 8

                    jsc.initVML();

                    var vmlContainer = document.createElement('div');
                    vmlContainer.style.position = 'relative';
                    vmlContainer.style.overflow = 'hidden';

                    var hGrad = document.createElement(jsc._vmlNS + ':fill');
                    hGrad.type = 'gradient';
                    hGrad.method = 'linear';
                    hGrad.angle = '90';
                    hGrad.colors = '16.67% #F0F, 33.33% #00F, 50% #0FF, 66.67% #0F0, 83.33% #FF0'

                    var hRect = document.createElement(jsc._vmlNS + ':rect');
                    hRect.style.position = 'absolute';
                    hRect.style.left = -1 + 'px';
                    hRect.style.top = -1 + 'px';
                    hRect.stroked = false;
                    hRect.appendChild(hGrad);
                    vmlContainer.appendChild(hRect);

                    var vGrad = document.createElement(jsc._vmlNS + ':fill');
                    vGrad.type = 'gradient';
                    vGrad.method = 'linear';
                    vGrad.angle = '180';
                    vGrad.opacity = '0';

                    var vRect = document.createElement(jsc._vmlNS + ':rect');
                    vRect.style.position = 'absolute';
                    vRect.style.left = -1 + 'px';
                    vRect.style.top = -1 + 'px';
                    vRect.stroked = false;
                    vRect.appendChild(vGrad);
                    vmlContainer.appendChild(vRect);

                    var drawFunc = function (width, height, type) {
                        vmlContainer.style.width = width + 'px';
                        vmlContainer.style.height = height + 'px';

                        hRect.style.width =
                            vRect.style.width =
                                (width + 1) + 'px';
                        hRect.style.height =
                            vRect.style.height =
                                (height + 1) + 'px';

                        // Colors must be specified during every redraw, otherwise IE won't display
                        // a full gradient during a subsequential redraw
                        hGrad.color = '#F00';
                        hGrad.color2 = '#F00';

                        switch (type.toLowerCase()) {
                            case 's':
                                vGrad.color = vGrad.color2 = '#FFF';
                                break;
                            case 'v':
                                vGrad.color = vGrad.color2 = '#000';
                                break;
                        }
                    };

                    paletteObj.elm = vmlContainer;
                    paletteObj.draw = drawFunc;
                }

                return paletteObj;
            },


            createSliderGradient: function () {

                var sliderObj = {
                    elm: null,
                    draw: null
                };

                if (jsc.isCanvasSupported) {
                    // Canvas implementation for modern browsers

                    var canvas = document.createElement('canvas');
                    var ctx = canvas.getContext('2d');

                    var drawFunc = function (width, height, color1, color2) {
                        canvas.width = width;
                        canvas.height = height;

                        ctx.clearRect(0, 0, canvas.width, canvas.height);

                        var grad = ctx.createLinearGradient(0, 0, 0, canvas.height);
                        grad.addColorStop(0, color1);
                        grad.addColorStop(1, color2);

                        ctx.fillStyle = grad;
                        ctx.fillRect(0, 0, canvas.width, canvas.height);
                    };

                    sliderObj.elm = canvas;
                    sliderObj.draw = drawFunc;

                } else {
                    // VML fallback for IE 7 and 8

                    jsc.initVML();

                    var vmlContainer = document.createElement('div');
                    vmlContainer.style.position = 'relative';
                    vmlContainer.style.overflow = 'hidden';

                    var grad = document.createElement(jsc._vmlNS + ':fill');
                    grad.type = 'gradient';
                    grad.method = 'linear';
                    grad.angle = '180';

                    var rect = document.createElement(jsc._vmlNS + ':rect');
                    rect.style.position = 'absolute';
                    rect.style.left = -1 + 'px';
                    rect.style.top = -1 + 'px';
                    rect.stroked = false;
                    rect.appendChild(grad);
                    vmlContainer.appendChild(rect);

                    var drawFunc = function (width, height, color1, color2) {
                        vmlContainer.style.width = width + 'px';
                        vmlContainer.style.height = height + 'px';

                        rect.style.width = (width + 1) + 'px';
                        rect.style.height = (height + 1) + 'px';

                        grad.color = color1;
                        grad.color2 = color2;
                    };

                    sliderObj.elm = vmlContainer;
                    sliderObj.draw = drawFunc;
                }

                return sliderObj;
            },


            leaveValue: 1 << 0,
            leaveStyle: 1 << 1,
            leavePad: 1 << 2,
            leaveSld: 1 << 3,


            BoxShadow: (function () {
                var BoxShadow = function (hShadow, vShadow, blur, spread, color, inset) {
                    this.hShadow = hShadow;
                    this.vShadow = vShadow;
                    this.blur = blur;
                    this.spread = spread;
                    this.color = color;
                    this.inset = !!inset;
                };

                BoxShadow.prototype.toString = function () {
                    var vals = [
                        Math.round(this.hShadow) + 'px',
                        Math.round(this.vShadow) + 'px',
                        Math.round(this.blur) + 'px',
                        Math.round(this.spread) + 'px',
                        this.color
                    ];
                    if (this.inset) {
                        vals.push('inset');
                    }
                    return vals.join(' ');
                };

                return BoxShadow;
            })(),


            //
            // Usage:
            // var myColor = new jscolor(<targetElement> [, <options>])
            //

            jscolor: function (targetElement, options) {

                // General options
                //
                this.value = null; // initial HEX color. To change it later, use methods fromString(), fromHSV() and fromRGB()
                this.valueElement = targetElement; // element that will be used to display and input the color code
                this.styleElement = targetElement; // element that will preview the picked color using CSS backgroundColor
                this.required = true; // whether the associated text <input> can be left empty
                this.refine = true; // whether to refine the entered color code (e.g. uppercase it and remove whitespace)
                this.hash = false; // whether to prefix the HEX color code with # symbol
                this.uppercase = true; // whether to uppercase the color code
                this.onFineChange = null; // called instantly every time the color changes (value can be either a function or a string with javascript code)
                this.activeClass = 'jscolor-active'; // class to be set to the target element when a picker window is open on it
                this.minS = 0; // min allowed saturation (0 - 100)
                this.maxS = 100; // max allowed saturation (0 - 100)
                this.minV = 0; // min allowed value (brightness) (0 - 100)
                this.maxV = 100; // max allowed value (brightness) (0 - 100)

                // Accessing the picked color
                //
                this.hsv = [0, 0, 100]; // read-only  [0-360, 0-100, 0-100]
                this.rgb = [255, 255, 255]; // read-only  [0-255, 0-255, 0-255]

                // Color Picker options
                //
                this.width = 181; // width of color palette (in px)
                this.height = 101; // height of color palette (in px)
                this.showOnClick = true; // whether to display the color picker when user clicks on its target element
                this.mode = 'HSV'; // HSV | HVS | HS | HV - layout of the color picker controls
                this.position = 'bottom'; // left | right | top | bottom - position relative to the target element
                this.smartPosition = true; // automatically change picker position when there is not enough space for it
                this.sliderSize = 16; // px
                this.crossSize = 8; // px
                this.closable = false; // whether to display the Close button
                this.closeText = 'Close';
                this.buttonColor = '#000000'; // CSS color
                this.buttonHeight = 18; // px
                this.padding = 12; // px
                this.backgroundColor = '#FFFFFF'; // CSS color
                this.borderWidth = 1; // px
                this.borderColor = '#BBBBBB'; // CSS color
                this.borderRadius = 8; // px
                this.insetWidth = 1; // px
                this.insetColor = '#BBBBBB'; // CSS color
                this.shadow = true; // whether to display shadow
                this.shadowBlur = 15; // px
                this.shadowColor = 'rgba(0,0,0,0.2)'; // CSS color
                this.pointerColor = '#4C4C4C'; // px
                this.pointerBorderColor = '#FFFFFF'; // px
                this.pointerBorderWidth = 1; // px
                this.pointerThickness = 2; // px
                this.zIndex = 99999;
                this.container = null; // where to append the color picker (BODY element by default)


                for (var opt in options) {
                    if (options.hasOwnProperty(opt)) {
                        this[opt] = options[opt];
                    }
                }


                this.hide = function () {
                    if (isPickerOwner()) {
                        detachPicker();
                    }
                };


                this.show = function () {
                    drawPicker();
                };


                this.redraw = function () {
                    if (isPickerOwner()) {
                        drawPicker();
                    }
                };


                this.importColor = function () {
                    if (!this.valueElement) {
                        this.exportColor();
                    } else {
                        if (jsc.isElementType(this.valueElement, 'input')) {
                            if (!this.refine) {
                                if (!this.fromString(this.valueElement.value, jsc.leaveValue)) {
                                    if (this.styleElement) {
                                        this.styleElement.style.backgroundImage = this.styleElement._jscOrigStyle.backgroundImage;
                                        this.styleElement.style.backgroundColor = this.styleElement._jscOrigStyle.backgroundColor;
                                        this.styleElement.style.color = this.styleElement._jscOrigStyle.color;
                                    }
                                    this.exportColor(jsc.leaveValue | jsc.leaveStyle);
                                }
                            } else if (!this.required && /^\s*$/.test(this.valueElement.value)) {
                                this.valueElement.value = '';
                                if (this.styleElement) {
                                    this.styleElement.style.backgroundImage = this.styleElement._jscOrigStyle.backgroundImage;
                                    this.styleElement.style.backgroundColor = this.styleElement._jscOrigStyle.backgroundColor;
                                    this.styleElement.style.color = this.styleElement._jscOrigStyle.color;
                                }
                                this.exportColor(jsc.leaveValue | jsc.leaveStyle);

                            } else if (this.fromString(this.valueElement.value)) {
                                // managed to import color successfully from the value -> OK, don't do anything
                            } else {
                                this.exportColor();
                            }
                        } else {
                            // not an input element -> doesn't have any value
                            this.exportColor();
                        }
                    }
                };


                this.exportColor = function (flags) {
                    if (!(flags & jsc.leaveValue) && this.valueElement) {
                        var value = this.toString();
                        if (this.uppercase) {
                            value = value.toUpperCase();
                        }
                        if (this.hash) {
                            value = '#' + value;
                        }

                        if (jsc.isElementType(this.valueElement, 'input')) {
                            this.valueElement.value = value;
                        } else {
                            this.valueElement.innerHTML = value;
                        }
                    }
                    if (!(flags & jsc.leaveStyle)) {
                        if (this.styleElement) {
                            this.styleElement.style.backgroundImage = 'none';
                            this.styleElement.style.backgroundColor = '#' + this.toString();
                            this.styleElement.style.color = this.isLight() ? '#000' : '#FFF';
                        }
                    }
                    if (!(flags & jsc.leavePad) && isPickerOwner()) {
                        redrawPad();
                    }
                    if (!(flags & jsc.leaveSld) && isPickerOwner()) {
                        redrawSld();
                    }
                };


                // h: 0-360
                // s: 0-100
                // v: 0-100
                //
                this.fromHSV = function (h, s, v, flags) { // null = don't change
                    if (h !== null) {
                        if (isNaN(h)) {
                            return false;
                        }
                        h = Math.max(0, Math.min(360, h));
                    }
                    if (s !== null) {
                        if (isNaN(s)) {
                            return false;
                        }
                        s = Math.max(0, Math.min(100, this.maxS, s), this.minS);
                    }
                    if (v !== null) {
                        if (isNaN(v)) {
                            return false;
                        }
                        v = Math.max(0, Math.min(100, this.maxV, v), this.minV);
                    }

                    this.rgb = HSV_RGB(
                        h === null ? this.hsv[0] : (this.hsv[0] = h),
                        s === null ? this.hsv[1] : (this.hsv[1] = s),
                        v === null ? this.hsv[2] : (this.hsv[2] = v)
                    );

                    this.exportColor(flags);
                };


                // r: 0-255
                // g: 0-255
                // b: 0-255
                //
                this.fromRGB = function (r, g, b, flags) { // null = don't change
                    if (r !== null) {
                        if (isNaN(r)) {
                            return false;
                        }
                        r = Math.max(0, Math.min(255, r));
                    }
                    if (g !== null) {
                        if (isNaN(g)) {
                            return false;
                        }
                        g = Math.max(0, Math.min(255, g));
                    }
                    if (b !== null) {
                        if (isNaN(b)) {
                            return false;
                        }
                        b = Math.max(0, Math.min(255, b));
                    }

                    var hsv = RGB_HSV(
                        r === null ? this.rgb[0] : r,
                        g === null ? this.rgb[1] : g,
                        b === null ? this.rgb[2] : b
                    );
                    if (hsv[0] !== null) {
                        this.hsv[0] = Math.max(0, Math.min(360, hsv[0]));
                    }
                    if (hsv[2] !== 0) {
                        this.hsv[1] = hsv[1] === null ? null : Math.max(0, this.minS, Math.min(100, this.maxS, hsv[1]));
                    }
                    this.hsv[2] = hsv[2] === null ? null : Math.max(0, this.minV, Math.min(100, this.maxV, hsv[2]));

                    // update RGB according to final HSV, as some values might be trimmed
                    var rgb = HSV_RGB(this.hsv[0], this.hsv[1], this.hsv[2]);
                    this.rgb[0] = rgb[0];
                    this.rgb[1] = rgb[1];
                    this.rgb[2] = rgb[2];

                    this.exportColor(flags);
                };


                this.fromString = function (str, flags) {
                    var m;
                    if (m = str.match(/^\W*([0-9A-F]{3}([0-9A-F]{3})?)\W*$/i)) {
                        // HEX notation
                        //

                        if (m[1].length === 6) {
                            // 6-char notation
                            this.fromRGB(
                                parseInt(m[1].substr(0, 2), 16),
                                parseInt(m[1].substr(2, 2), 16),
                                parseInt(m[1].substr(4, 2), 16),
                                flags
                            );
                        } else {
                            // 3-char notation
                            this.fromRGB(
                                parseInt(m[1].charAt(0) + m[1].charAt(0), 16),
                                parseInt(m[1].charAt(1) + m[1].charAt(1), 16),
                                parseInt(m[1].charAt(2) + m[1].charAt(2), 16),
                                flags
                            );
                        }
                        return true;

                    } else if (m = str.match(/^\W*rgba?\(([^)]*)\)\W*$/i)) {
                        var params = m[1].split(',');
                        var re = /^\s*(\d*)(\.\d+)?\s*$/;
                        var mR, mG, mB;
                        if (
                            params.length >= 3 &&
                            (mR = params[0].match(re)) &&
                            (mG = params[1].match(re)) &&
                            (mB = params[2].match(re))
                        ) {
                            var r = parseFloat((mR[1] || '0') + (mR[2] || ''));
                            var g = parseFloat((mG[1] || '0') + (mG[2] || ''));
                            var b = parseFloat((mB[1] || '0') + (mB[2] || ''));
                            this.fromRGB(r, g, b, flags);
                            return true;
                        }
                    }
                    return false;
                };


                this.toString = function () {
                    return (
                        (0x100 | Math.round(this.rgb[0])).toString(16).substr(1) +
                        (0x100 | Math.round(this.rgb[1])).toString(16).substr(1) +
                        (0x100 | Math.round(this.rgb[2])).toString(16).substr(1)
                    );
                };


                this.toHEXString = function () {
                    return '#' + this.toString().toUpperCase();
                };


                this.toRGBString = function () {
                    return ('rgb(' +
                        Math.round(this.rgb[0]) + ',' +
                        Math.round(this.rgb[1]) + ',' +
                        Math.round(this.rgb[2]) + ')'
                    );
                };


                this.isLight = function () {
                    return (
                        0.213 * this.rgb[0] +
                        0.715 * this.rgb[1] +
                        0.072 * this.rgb[2] >
                        255 / 2
                    );
                };


                this._processParentElementsInDOM = function () {
                    if (this._linkedElementsProcessed) {
                        return;
                    }
                    this._linkedElementsProcessed = true;

                    var elm = this.targetElement;
                    do {
                        // If the target element or one of its parent nodes has fixed position,
                        // then use fixed positioning instead
                        //
                        // Note: In Firefox, getComputedStyle returns null in a hidden iframe,
                        // that's why we need to check if the returned style object is non-empty
                        var currStyle = jsc.getStyle(elm);
                        if (currStyle && currStyle.position.toLowerCase() === 'fixed') {
                            this.fixed = true;
                        }

                        if (elm !== this.targetElement) {
                            // Ensure to attach onParentScroll only once to each parent element
                            // (multiple targetElements can share the same parent nodes)
                            //
                            // Note: It's not just offsetParents that can be scrollable,
                            // that's why we loop through all parent nodes
                            if (!elm._jscEventsAttached) {
                                jsc.attachEvent(elm, 'scroll', jsc.onParentScroll);
                                elm._jscEventsAttached = true;
                            }
                        }
                    } while ((elm = elm.parentNode) && !jsc.isElementType(elm, 'body'));
                };


                // r: 0-255
                // g: 0-255
                // b: 0-255
                //
                // returns: [ 0-360, 0-100, 0-100 ]
                //
                function RGB_HSV(r, g, b) {
                    r /= 255;
                    g /= 255;
                    b /= 255;
                    var n = Math.min(Math.min(r, g), b);
                    var v = Math.max(Math.max(r, g), b);
                    var m = v - n;
                    if (m === 0) {
                        return [null, 0, 100 * v];
                    }
                    var h = r === n ? 3 + (b - g) / m : (g === n ? 5 + (r - b) / m : 1 + (g - r) / m);
                    return [
                        60 * (h === 6 ? 0 : h),
                        100 * (m / v),
                        100 * v
                    ];
                }


                // h: 0-360
                // s: 0-100
                // v: 0-100
                //
                // returns: [ 0-255, 0-255, 0-255 ]
                //
                function HSV_RGB(h, s, v) {
                    var u = 255 * (v / 100);

                    if (h === null) {
                        return [u, u, u];
                    }

                    h /= 60;
                    s /= 100;

                    var i = Math.floor(h);
                    var f = i % 2 ? h - i : 1 - (h - i);
                    var m = u * (1 - s);
                    var n = u * (1 - s * f);
                    switch (i) {
                        case 6:
                        case 0:
                            return [u, n, m];
                        case 1:
                            return [n, u, m];
                        case 2:
                            return [m, u, n];
                        case 3:
                            return [m, n, u];
                        case 4:
                            return [n, m, u];
                        case 5:
                            return [u, m, n];
                    }
                }


                function detachPicker() {
                    jsc.unsetClass(THIS.targetElement, THIS.activeClass);
                    jsc.picker.wrap.parentNode.removeChild(jsc.picker.wrap);
                    delete jsc.picker.owner;
                }


                function drawPicker() {

                    // At this point, when drawing the picker, we know what the parent elements are
                    // and we can do all related DOM operations, such as registering events on them
                    // or checking their positioning
                    THIS._processParentElementsInDOM();

                    if (!jsc.picker) {
                        jsc.picker = {
                            owner: null,
                            wrap: document.createElement('div'),
                            box: document.createElement('div'),
                            boxS: document.createElement('div'), // shadow area
                            boxB: document.createElement('div'), // border
                            pad: document.createElement('div'),
                            padB: document.createElement('div'), // border
                            padM: document.createElement('div'), // mouse/touch area
                            padPal: jsc.createPalette(),
                            cross: document.createElement('div'),
                            crossBY: document.createElement('div'), // border Y
                            crossBX: document.createElement('div'), // border X
                            crossLY: document.createElement('div'), // line Y
                            crossLX: document.createElement('div'), // line X
                            sld: document.createElement('div'),
                            sldB: document.createElement('div'), // border
                            sldM: document.createElement('div'), // mouse/touch area
                            sldGrad: jsc.createSliderGradient(),
                            sldPtrS: document.createElement('div'), // slider pointer spacer
                            sldPtrIB: document.createElement('div'), // slider pointer inner border
                            sldPtrMB: document.createElement('div'), // slider pointer middle border
                            sldPtrOB: document.createElement('div'), // slider pointer outer border
                            btn: document.createElement('div'),
                            btnT: document.createElement('span') // text
                        };

                        jsc.picker.pad.appendChild(jsc.picker.padPal.elm);
                        jsc.picker.padB.appendChild(jsc.picker.pad);
                        jsc.picker.cross.appendChild(jsc.picker.crossBY);
                        jsc.picker.cross.appendChild(jsc.picker.crossBX);
                        jsc.picker.cross.appendChild(jsc.picker.crossLY);
                        jsc.picker.cross.appendChild(jsc.picker.crossLX);
                        jsc.picker.padB.appendChild(jsc.picker.cross);
                        jsc.picker.box.appendChild(jsc.picker.padB);
                        jsc.picker.box.appendChild(jsc.picker.padM);

                        jsc.picker.sld.appendChild(jsc.picker.sldGrad.elm);
                        jsc.picker.sldB.appendChild(jsc.picker.sld);
                        jsc.picker.sldB.appendChild(jsc.picker.sldPtrOB);
                        jsc.picker.sldPtrOB.appendChild(jsc.picker.sldPtrMB);
                        jsc.picker.sldPtrMB.appendChild(jsc.picker.sldPtrIB);
                        jsc.picker.sldPtrIB.appendChild(jsc.picker.sldPtrS);
                        jsc.picker.box.appendChild(jsc.picker.sldB);
                        jsc.picker.box.appendChild(jsc.picker.sldM);

                        jsc.picker.btn.appendChild(jsc.picker.btnT);
                        jsc.picker.box.appendChild(jsc.picker.btn);

                        jsc.picker.boxB.appendChild(jsc.picker.box);
                        jsc.picker.wrap.appendChild(jsc.picker.boxS);
                        jsc.picker.wrap.appendChild(jsc.picker.boxB);
                    }

                    var p = jsc.picker;

                    var displaySlider = !!jsc.getSliderComponent(THIS);
                    var dims = jsc.getPickerDims(THIS);
                    var crossOuterSize = (2 * THIS.pointerBorderWidth + THIS.pointerThickness + 2 * THIS.crossSize);
                    var padToSliderPadding = jsc.getPadToSliderPadding(THIS);
                    var borderRadius = Math.min(
                        THIS.borderRadius,
                        Math.round(THIS.padding * Math.PI)); // px
                    var padCursor = 'crosshair';

                    // wrap
                    p.wrap.style.clear = 'both';
                    p.wrap.style.width = (dims[0] + 2 * THIS.borderWidth) + 'px';
                    p.wrap.style.height = (dims[1] + 2 * THIS.borderWidth) + 'px';
                    p.wrap.style.zIndex = THIS.zIndex;

                    // picker
                    p.box.style.width = dims[0] + 'px';
                    p.box.style.height = dims[1] + 'px';

                    p.boxS.style.position = 'absolute';
                    p.boxS.style.left = '0';
                    p.boxS.style.top = '0';
                    p.boxS.style.width = '100%';
                    p.boxS.style.height = '100%';
                    jsc.setBorderRadius(p.boxS, borderRadius + 'px');

                    // picker border
                    p.boxB.style.position = 'relative';
                    p.boxB.style.border = THIS.borderWidth + 'px solid';
                    p.boxB.style.borderColor = THIS.borderColor;
                    p.boxB.style.background = THIS.backgroundColor;
                    jsc.setBorderRadius(p.boxB, borderRadius + 'px');

                    // IE hack:
                    // If the element is transparent, IE will trigger the event on the elements under it,
                    // e.g. on Canvas or on elements with border
                    p.padM.style.background =
                        p.sldM.style.background =
                            '#FFF';
                    jsc.setStyle(p.padM, 'opacity', '0');
                    jsc.setStyle(p.sldM, 'opacity', '0');

                    // pad
                    p.pad.style.position = 'relative';
                    p.pad.style.width = THIS.width + 'px';
                    p.pad.style.height = THIS.height + 'px';

                    // pad palettes (HSV and HVS)
                    p.padPal.draw(THIS.width, THIS.height, jsc.getPadYComponent(THIS));

                    // pad border
                    p.padB.style.position = 'absolute';
                    p.padB.style.left = THIS.padding + 'px';
                    p.padB.style.top = THIS.padding + 'px';
                    p.padB.style.border = THIS.insetWidth + 'px solid';
                    p.padB.style.borderColor = THIS.insetColor;

                    // pad mouse area
                    p.padM._jscInstance = THIS;
                    p.padM._jscControlName = 'pad';
                    p.padM.style.position = 'absolute';
                    p.padM.style.left = '0';
                    p.padM.style.top = '0';
                    p.padM.style.width = (THIS.padding + 2 * THIS.insetWidth + THIS.width + padToSliderPadding / 2) + 'px';
                    p.padM.style.height = dims[1] + 'px';
                    p.padM.style.cursor = padCursor;

                    // pad cross
                    p.cross.style.position = 'absolute';
                    p.cross.style.left =
                        p.cross.style.top =
                            '0';
                    p.cross.style.width =
                        p.cross.style.height =
                            crossOuterSize + 'px';

                    // pad cross border Y and X
                    p.crossBY.style.position =
                        p.crossBX.style.position =
                            'absolute';
                    p.crossBY.style.background =
                        p.crossBX.style.background =
                            THIS.pointerBorderColor;
                    p.crossBY.style.width =
                        p.crossBX.style.height =
                            (2 * THIS.pointerBorderWidth + THIS.pointerThickness) + 'px';
                    p.crossBY.style.height =
                        p.crossBX.style.width =
                            crossOuterSize + 'px';
                    p.crossBY.style.left =
                        p.crossBX.style.top =
                            (Math.floor(crossOuterSize / 2) - Math.floor(THIS.pointerThickness / 2) - THIS.pointerBorderWidth) + 'px';
                    p.crossBY.style.top =
                        p.crossBX.style.left =
                            '0';

                    // pad cross line Y and X
                    p.crossLY.style.position =
                        p.crossLX.style.position =
                            'absolute';
                    p.crossLY.style.background =
                        p.crossLX.style.background =
                            THIS.pointerColor;
                    p.crossLY.style.height =
                        p.crossLX.style.width =
                            (crossOuterSize - 2 * THIS.pointerBorderWidth) + 'px';
                    p.crossLY.style.width =
                        p.crossLX.style.height =
                            THIS.pointerThickness + 'px';
                    p.crossLY.style.left =
                        p.crossLX.style.top =
                            (Math.floor(crossOuterSize / 2) - Math.floor(THIS.pointerThickness / 2)) + 'px';
                    p.crossLY.style.top =
                        p.crossLX.style.left =
                            THIS.pointerBorderWidth + 'px';

                    // slider
                    p.sld.style.overflow = 'hidden';
                    p.sld.style.width = THIS.sliderSize + 'px';
                    p.sld.style.height = THIS.height + 'px';

                    // slider gradient
                    p.sldGrad.draw(THIS.sliderSize, THIS.height, '#000', '#000');

                    // slider border
                    p.sldB.style.display = displaySlider ? 'block' : 'none';
                    p.sldB.style.position = 'absolute';
                    p.sldB.style.right = THIS.padding + 'px';
                    p.sldB.style.top = THIS.padding + 'px';
                    p.sldB.style.border = THIS.insetWidth + 'px solid';
                    p.sldB.style.borderColor = THIS.insetColor;

                    // slider mouse area
                    p.sldM._jscInstance = THIS;
                    p.sldM._jscControlName = 'sld';
                    p.sldM.style.display = displaySlider ? 'block' : 'none';
                    p.sldM.style.position = 'absolute';
                    p.sldM.style.right = '0';
                    p.sldM.style.top = '0';
                    p.sldM.style.width = (THIS.sliderSize + padToSliderPadding / 2 + THIS.padding + 2 * THIS.insetWidth) + 'px';
                    p.sldM.style.height = dims[1] + 'px';
                    p.sldM.style.cursor = 'default';

                    // slider pointer inner and outer border
                    p.sldPtrIB.style.border =
                        p.sldPtrOB.style.border =
                            THIS.pointerBorderWidth + 'px solid ' + THIS.pointerBorderColor;

                    // slider pointer outer border
                    p.sldPtrOB.style.position = 'absolute';
                    p.sldPtrOB.style.left = -(2 * THIS.pointerBorderWidth + THIS.pointerThickness) + 'px';
                    p.sldPtrOB.style.top = '0';

                    // slider pointer middle border
                    p.sldPtrMB.style.border = THIS.pointerThickness + 'px solid ' + THIS.pointerColor;

                    // slider pointer spacer
                    p.sldPtrS.style.width = THIS.sliderSize + 'px';
                    p.sldPtrS.style.height = sliderPtrSpace + 'px';

                    // the Close button
                    function setBtnBorder() {
                        var insetColors = THIS.insetColor.split(/\s+/);
                        var outsetColor = insetColors.length < 2 ? insetColors[0] : insetColors[1] + ' ' + insetColors[0] + ' ' + insetColors[0] + ' ' + insetColors[1];
                        p.btn.style.borderColor = outsetColor;
                    }

                    p.btn.style.display = THIS.closable ? 'block' : 'none';
                    p.btn.style.position = 'absolute';
                    p.btn.style.left = THIS.padding + 'px';
                    p.btn.style.bottom = THIS.padding + 'px';
                    p.btn.style.padding = '0 15px';
                    p.btn.style.height = THIS.buttonHeight + 'px';
                    p.btn.style.border = THIS.insetWidth + 'px solid';
                    setBtnBorder();
                    p.btn.style.color = THIS.buttonColor;
                    p.btn.style.font = '12px sans-serif';
                    p.btn.style.textAlign = 'center';
                    try {
                        p.btn.style.cursor = 'pointer';
                    } catch (eOldIE) {
                        p.btn.style.cursor = 'hand';
                    }
                    p.btn.onmousedown = function () {
                        THIS.hide();
                    };
                    p.btnT.style.lineHeight = THIS.buttonHeight + 'px';
                    p.btnT.innerHTML = '';
                    p.btnT.appendChild(document.createTextNode(THIS.closeText));

                    // place pointers
                    redrawPad();
                    redrawSld();

                    // If we are changing the owner without first closing the picker,
                    // make sure to first deal with the old owner
                    if (jsc.picker.owner && jsc.picker.owner !== THIS) {
                        jsc.unsetClass(jsc.picker.owner.targetElement, THIS.activeClass);
                    }

                    // Set the new picker owner
                    jsc.picker.owner = THIS;

                    // The redrawPosition() method needs picker.owner to be set, that's why we call it here,
                    // after setting the owner
                    if (jsc.isElementType(container, 'body')) {
                        jsc.redrawPosition();
                    } else {
                        jsc._drawPosition(THIS, 0, 0, 'relative', false);
                    }

                    if (p.wrap.parentNode != container) {
                        container.appendChild(p.wrap);
                    }

                    jsc.setClass(THIS.targetElement, THIS.activeClass);
                }


                function redrawPad() {
                    // redraw the pad pointer
                    switch (jsc.getPadYComponent(THIS)) {
                        case 's':
                            var yComponent = 1;
                            break;
                        case 'v':
                            var yComponent = 2;
                            break;
                    }
                    var x = Math.round((THIS.hsv[0] / 360) * (THIS.width - 1));
                    var y = Math.round((1 - THIS.hsv[yComponent] / 100) * (THIS.height - 1));
                    var crossOuterSize = (2 * THIS.pointerBorderWidth + THIS.pointerThickness + 2 * THIS.crossSize);
                    var ofs = -Math.floor(crossOuterSize / 2);
                    jsc.picker.cross.style.left = (x + ofs) + 'px';
                    jsc.picker.cross.style.top = (y + ofs) + 'px';

                    // redraw the slider
                    switch (jsc.getSliderComponent(THIS)) {
                        case 's':
                            var rgb1 = HSV_RGB(THIS.hsv[0], 100, THIS.hsv[2]);
                            var rgb2 = HSV_RGB(THIS.hsv[0], 0, THIS.hsv[2]);
                            var color1 = 'rgb(' +
                                Math.round(rgb1[0]) + ',' +
                                Math.round(rgb1[1]) + ',' +
                                Math.round(rgb1[2]) + ')';
                            var color2 = 'rgb(' +
                                Math.round(rgb2[0]) + ',' +
                                Math.round(rgb2[1]) + ',' +
                                Math.round(rgb2[2]) + ')';
                            jsc.picker.sldGrad.draw(THIS.sliderSize, THIS.height, color1, color2);
                            break;
                        case 'v':
                            var rgb = HSV_RGB(THIS.hsv[0], THIS.hsv[1], 100);
                            var color1 = 'rgb(' +
                                Math.round(rgb[0]) + ',' +
                                Math.round(rgb[1]) + ',' +
                                Math.round(rgb[2]) + ')';
                            var color2 = '#000';
                            jsc.picker.sldGrad.draw(THIS.sliderSize, THIS.height, color1, color2);
                            break;
                    }
                }


                function redrawSld() {
                    var sldComponent = jsc.getSliderComponent(THIS);
                    if (sldComponent) {
                        // redraw the slider pointer
                        switch (sldComponent) {
                            case 's':
                                var yComponent = 1;
                                break;
                            case 'v':
                                var yComponent = 2;
                                break;
                        }
                        var y = Math.round((1 - THIS.hsv[yComponent] / 100) * (THIS.height - 1));
                        jsc.picker.sldPtrOB.style.top = (y - (2 * THIS.pointerBorderWidth + THIS.pointerThickness) - Math.floor(sliderPtrSpace / 2)) + 'px';
                    }
                }


                function isPickerOwner() {
                    return jsc.picker && jsc.picker.owner === THIS;
                }


                function blurValue() {
                    THIS.importColor();
                }


                // Find the target element
                if (typeof targetElement === 'string') {
                    var id = targetElement;
                    var elm = document.getElementById(id);
                    if (elm) {
                        this.targetElement = elm;
                    } else {
                        jsc.warn('Could not find target element with ID \'' + id + '\'');
                    }
                } else if (targetElement) {
                    this.targetElement = targetElement;
                } else {
                    jsc.warn('Invalid target element: \'' + targetElement + '\'');
                }

                if (this.targetElement._jscLinkedInstance) {
                    jsc.warn('Cannot link jscolor twice to the same element. Skipping.');
                    return;
                }
                this.targetElement._jscLinkedInstance = this;

                // Find the value element
                this.valueElement = jsc.fetchElement(this.valueElement);
                // Find the style element
                this.styleElement = jsc.fetchElement(this.styleElement);

                var THIS = this;
                var container =
                    this.container ?
                        jsc.fetchElement(this.container) :
                        document.getElementsByTagName('body')[0];
                var sliderPtrSpace = 3; // px

                // For BUTTON elements it's important to stop them from sending the form when clicked
                // (e.g. in Safari)
                if (jsc.isElementType(this.targetElement, 'button')) {
                    if (this.targetElement.onclick) {
                        var origCallback = this.targetElement.onclick;
                        this.targetElement.onclick = function (evt) {
                            origCallback.call(this, evt);
                            return false;
                        };
                    } else {
                        this.targetElement.onclick = function () {
                            return false;
                        };
                    }
                }

                /*
                var elm = this.targetElement;
                do {
                    // If the target element or one of its offsetParents has fixed position,
                    // then use fixed positioning instead
                    //
                    // Note: In Firefox, getComputedStyle returns null in a hidden iframe,
                    // that's why we need to check if the returned style object is non-empty
                    var currStyle = jsc.getStyle(elm);
                    if (currStyle && currStyle.position.toLowerCase() === 'fixed') {
                        this.fixed = true;
                    }

                    if (elm !== this.targetElement) {
                        // attach onParentScroll so that we can recompute the picker position
                        // when one of the offsetParents is scrolled
                        if (!elm._jscEventsAttached) {
                            jsc.attachEvent(elm, 'scroll', jsc.onParentScroll);
                            elm._jscEventsAttached = true;
                        }
                    }
                } while ((elm = elm.offsetParent) && !jsc.isElementType(elm, 'body'));
                */

                // valueElement
                if (this.valueElement) {
                    if (jsc.isElementType(this.valueElement, 'input')) {
                        var updateField = function () {
                            THIS.fromString(THIS.valueElement.value, jsc.leaveValue);
                            jsc.dispatchFineChange(THIS);
                        };
                        jsc.attachEvent(this.valueElement, 'keyup', updateField);
                        jsc.attachEvent(this.valueElement, 'input', updateField);
                        jsc.attachEvent(this.valueElement, 'blur', blurValue);
                        this.valueElement.setAttribute('autocomplete', 'off');
                    }
                }

                // styleElement
                if (this.styleElement) {
                    this.styleElement._jscOrigStyle = {
                        backgroundImage: this.styleElement.style.backgroundImage,
                        backgroundColor: this.styleElement.style.backgroundColor,
                        color: this.styleElement.style.color
                    };
                }

                if (this.value) {
                    // Try to set the color from the .value option and if unsuccessful,
                    // export the current color
                    this.fromString(this.value) || this.exportColor();
                } else {
                    this.importColor();
                }
            }

        };


//================================
// Public properties and methods
//================================


// By default, search for all elements with class="jscolor" and install a color picker on them.
//
// You can change what class name will be looked for by setting the property jscolor.lookupClass
// anywhere in your HTML document. To completely disable the automatic lookup, set it to null.
//
        jsc.jscolor.lookupClass = 'jscolor';


        jsc.jscolor.installByClassName = function (className) {
            var inputElms = document.getElementsByTagName('input');
            var buttonElms = document.getElementsByTagName('button');

            jsc.tryInstallOnElements(inputElms, className);
            jsc.tryInstallOnElements(buttonElms, className);
        };


        jsc.register();


        return jsc.jscolor;


    })();
}