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    Current File : /home/m/e/h/meharicl/home2/meharicl/www/recensement2/js/jquery/captcha/ccs-captcha.js

    (function ($) {
    
    
        function qPath(x1, y1, x2, y2, x3, y3) {
            this.x1 = x1;
            this.y1 = y1;
            this.x2 = x2;
            this.y2 = y2;
            this.x3 = x3;
            this.y3 = y3;
            this.copy = function () {
                return new qPath(this.x1, this.y1, this.x2, this.y2, this.x3, this.y3);
            };
        }
    
        function qPaths() {
            this.paths = new Array();
            this.maxX = null;
            this.maxY = null;
            this.minX = null;
            this.minY = null;
            this.addPath = function (x1, y1, x2, y2, x3, y3) {
                if (this.maxX == null)
                    this.maxX = Math.max(x1, x3);
                else
                    this.maxX = Math.max(x1, x3, this.maxX);
    
                if (this.maxY == null)
                    this.maxY = Math.max(y1, y3);
                else
                    this.maxY = Math.max(y1, y3, this.maxY);
    
                if (this.minX == null)
                    this.minX = Math.min(x1, x3);
                else
                    this.minX = Math.min(x1, x3, this.minX);
    
                if (this.minY == null)
                    this.minY = Math.min(y1, y3);
                else
                    this.minY = Math.min(y1, y3, this.minY);
    
                this.paths.push(new qPath(x1, y1, x2, y2, x3, y3));
            };
            this.load = function (str) {
                var c = str.split(",");
                var i;
                for (i = 0; i < c.length; i += 6) {
                    this.addPath(parseInt(c[i], 10), parseInt(c[i + 1], 10), parseInt(c[i + 2], 10), parseInt(c[i + 3], 10), parseInt(c[i + 4], 10), parseInt(c[i + 5], 10));
                }
            };
        }
    
        function drawCaptcha(canvas, url, bColor, fColor) {
            $.ajax({
                url: url,
                cache: false
            }).done(function (msg) {
                var bp = new qPaths();
                bp.load(msg.replace(/\r/g, "").replace(/\n/g, "").replace(/\s*/g, ""));
                if (canvas.getContext) {
                    canvas.dir = "ltr";
                    var ctx = canvas.getContext("2d");
                    ctx.fillStyle = (bColor.split(";").length == 4 ? "rgba(" + bColor.replace(/;/g, ",") + ")" : "rgb(" + bColor.replace(/;/g, ",") + ")");
                    ctx.fillRect(0, 0, canvas.width, canvas.height);
                    ctx.fill();
                    ctx.strokeStyle = (fColor.split(";").length == 4 ? "rgba(" + fColor.replace(/;/g, ",") + ")" : "rgb(" + fColor.replace(/;/g, ",") + ")");
                    for (var i = 0; i < bp.paths.length; i++) {
                        ctx.beginPath();
                        ctx.moveTo(bp.paths[i].x1, bp.paths[i].y1);
                        ctx.quadraticCurveTo(bp.paths[i].x2, bp.paths[i].y2, bp.paths[i].x3, bp.paths[i].y3);
                        ctx.stroke();
                    }
                    var point = $("#" + $(canvas).ccsId() + "_point");
                    if (point.length > 0) {
                        point = point[0];
                        var cParent = canvas.parentNode;
                        point.parentNode.insertBefore(canvas, point);
                        point.parentNode.removeChild(point);
                        cParent.parentNode.removeChild(cParent);
                    }
                };
            }).fail(function (msg) {
                alert(msg);
            });
        }
    
    
        // Copyright 2006 Google Inc.
        //
        // Licensed under the Apache License, Version 2.0 (the "License");
        // you may not use this file except in compliance with the License.
        // You may obtain a copy of the License at
        //
        //   http://www.apache.org/licenses/LICENSE-2.0
        //
        // Unless required by applicable law or agreed to in writing, software
        // distributed under the License is distributed on an "AS IS" BASIS,
        // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
        // See the License for the specific language governing permissions and
        // limitations under the License.
    
    
        // Known Issues:
        //
        // * Patterns are not implemented.
        // * Radial gradient are not implemented. The VML version of these look very
        //   different from the canvas one.
        // * Clipping paths are not implemented.
        // * Coordsize. The width and height attribute have higher priority than the
        //   width and height style values which isn't correct.
        // * Painting mode isn't implemented.
        // * Canvas width/height should is using content-box by default. IE in
        //   Quirks mode will draw the canvas using border-box. Either change your
        //   doctype to HTML5
        //   (http://www.whatwg.org/specs/web-apps/current-work/#the-doctype)
        //   or use Box Sizing Behavior from WebFX
        //   (http://webfx.eae.net/dhtml/boxsizing/boxsizing.html)
        // * Non uniform scaling does not correctly scale strokes.
        // * Optimize. There is always room for speed improvements.
    
        // Only add this code if we do not already have a canvas implementation
        if (!document.createElement('canvas').getContext) {
    
            (function () {
    
                // alias some functions to make (compiled) code shorter
                var m = Math;
                var mr = m.round;
                var ms = m.sin;
                var mc = m.cos;
                var abs = m.abs;
                var sqrt = m.sqrt;
    
                // this is used for sub pixel precision
                var Z = 10;
                var Z2 = Z / 2;
    
                /**
                * This funtion is assigned to the <canvas> elements as element.getContext().
                * @this {HTMLElement}
                * @return {CanvasRenderingContext2D_}
                */
                function getContext() {
                    return this.context_ ||
            (this.context_ = new CanvasRenderingContext2D_(this));
                }
    
                var slice = Array.prototype.slice;
    
                /**
                * Binds a function to an object. The returned function will always use the
                * passed in {@code obj} as {@code this}.
                *
                * Example:
                *
                *   g = bind(f, obj, a, b)
                *   g(c, d) // will do f.call(obj, a, b, c, d)
                *
                * @param {Function} f The function to bind the object to
                * @param {Object} obj The object that should act as this when the function
                *     is called
                * @param {*} var_args Rest arguments that will be used as the initial
                *     arguments when the function is called
                * @return {Function} A new function that has bound this
                */
                function bind(f, obj, var_args) {
                    var a = slice.call(arguments, 2);
                    return function () {
                        return f.apply(obj, a.concat(slice.call(arguments)));
                    };
                }
    
                var G_vmlCanvasManager_ = {
                    init: function (opt_doc) {
                        if (/MSIE/.test(navigator.userAgent) && !window.opera) {
                            var doc = opt_doc || document;
                            // Create a dummy element so that IE will allow canvas elements to be
                            // recognized.
                            doc.createElement('canvas');
                            doc.attachEvent('onreadystatechange', bind(this.init_, this, doc));
                        }
                    },
    
                    init_: function (doc) {
                        // for CCS BEGIN
                        function getElementPosition(elem) {
                            var offsetTrail = elem;
                            var offsetLeft = 0;
                            var offsetTop = 0;
                            while (offsetTrail) {
                                offsetLeft += offsetTrail.offsetLeft;
                                offsetTop += offsetTrail.offsetTop;
                                offsetTrail = offsetTrail.offsetParent;
                            }
                            return { left: offsetLeft, top: offsetTop };
                        }
    
                        function makeControlAbsolute(elem) {
                            var rDiv = document.createElement("img");
                            rDiv.style.width = elem.width;
                            rDiv.style.height = elem.height;
                            rDiv.style.visibility = "hidden";
                            rDiv.id = elem.id + "_point";
                            elem.parentNode.insertBefore(rDiv, elem);
                            var coords = getElementPosition(rDiv);
                            var div = document.createElement("div");
                            div.style.position = "absolute";
                            div.style.top = coords.top + "px";
                            div.style.left = coords.left + "px";
                            div.dir = "ltr";
                            div.appendChild(elem);
                            document.body.appendChild(div);
                        }
                        // for CCS END
                        // create xmlns
                        if (!doc.namespaces['g_vml_']) {
                            doc.namespaces.add('g_vml_', 'urn:schemas-microsoft-com:vml',
                               '#default#VML');
    
                        }
                        if (!doc.namespaces['g_o_']) {
                            doc.namespaces.add('g_o_', 'urn:schemas-microsoft-com:office:office',
                               '#default#VML');
                        }
    
                        // Setup default CSS.  Only add one style sheet per document
                        if (!doc.styleSheets['ex_canvas_']) {
                            var ss = doc.createStyleSheet();
                            ss.owningElement.id = 'ex_canvas_';
                            ss.cssText = 'canvas{display:inline-block;overflow:hidden;' +
                            // default size is 300x150 in Gecko and Opera
                'text-align:left;width:300px;height:150px}' +
                'g_vml_\\:*{behavior:url(#default#VML)}' +
                'g_o_\\:*{behavior:url(#default#VML)}';
    
                        }
    
                        // find all canvas elements
                        var els = doc.getElementsByTagName('canvas');
                        for (var i = 0; i < els.length; i++) {
                            makeControlAbsolute(els[i]);
                            this.initElement(els[i]);
                        }
                    },
    
                    /**
                    * Public initializes a canvas element so that it can be used as canvas
                    * element from now on. This is called automatically before the page is
                    * loaded but if you are creating elements using createElement you need to
                    * make sure this is called on the element.
                    * @param {HTMLElement} el The canvas element to initialize.
                    * @return {HTMLElement} the element that was created.
                    */
                    initElement: function (el) {
                        if (!el.getContext) {
    
                            el.getContext = getContext;
    
                            // Remove fallback content. There is no way to hide text nodes so we
                            // just remove all childNodes. We could hide all elements and remove
                            // text nodes but who really cares about the fallback content.
                            el.innerHTML = '';
    
                            // do not use inline function because that will leak memory
                            el.attachEvent('onpropertychange', onPropertyChange);
                            el.attachEvent('onresize', onResize);
    
                            var attrs = el.attributes;
                            if (attrs.width && attrs.width.specified) {
                                // TODO: use runtimeStyle and coordsize
                                // el.getContext().setWidth_(attrs.width.nodeValue);
                                el.style.width = attrs.width.nodeValue + 'px';
                            } else {
                                el.width = el.clientWidth;
                            }
                            if (attrs.height && attrs.height.specified) {
                                // TODO: use runtimeStyle and coordsize
                                // el.getContext().setHeight_(attrs.height.nodeValue);
                                el.style.height = attrs.height.nodeValue + 'px';
                            } else {
                                el.height = el.clientHeight;
                            }
                            //el.getContext().setCoordsize_()
                        }
                        return el;
                    }
                };
    
                function onPropertyChange(e) {
                    var el = e.srcElement;
    
                    switch (e.propertyName) {
                        case 'width':
                            el.style.width = el.attributes.width.nodeValue + 'px';
                            el.getContext().clearRect();
                            break;
                        case 'height':
                            el.style.height = el.attributes.height.nodeValue + 'px';
                            el.getContext().clearRect();
                            break;
                    }
                }
    
                function onResize(e) {
                    var el = e.srcElement;
                    if (el.firstChild) {
                        el.firstChild.style.width = el.clientWidth + 'px';
                        el.firstChild.style.height = el.clientHeight + 'px';
                    }
                }
    
                G_vmlCanvasManager_.init();
    
                // precompute "00" to "FF"
                var dec2hex = [];
                for (var i = 0; i < 16; i++) {
                    for (var j = 0; j < 16; j++) {
                        dec2hex[i * 16 + j] = i.toString(16) + j.toString(16);
                    }
                }
    
                function createMatrixIdentity() {
                    return [
          [1, 0, 0],
          [0, 1, 0],
          [0, 0, 1]
        ];
                }
    
                function matrixMultiply(m1, m2) {
                    var result = createMatrixIdentity();
    
                    for (var x = 0; x < 3; x++) {
                        for (var y = 0; y < 3; y++) {
                            var sum = 0;
    
                            for (var z = 0; z < 3; z++) {
                                sum += m1[x][z] * m2[z][y];
                            }
    
                            result[x][y] = sum;
                        }
                    }
                    return result;
                }
    
                function copyState(o1, o2) {
                    o2.fillStyle = o1.fillStyle;
                    o2.lineCap = o1.lineCap;
                    o2.lineJoin = o1.lineJoin;
                    o2.lineWidth = o1.lineWidth;
                    o2.miterLimit = o1.miterLimit;
                    o2.shadowBlur = o1.shadowBlur;
                    o2.shadowColor = o1.shadowColor;
                    o2.shadowOffsetX = o1.shadowOffsetX;
                    o2.shadowOffsetY = o1.shadowOffsetY;
                    o2.strokeStyle = o1.strokeStyle;
                    o2.globalAlpha = o1.globalAlpha;
                    o2.arcScaleX_ = o1.arcScaleX_;
                    o2.arcScaleY_ = o1.arcScaleY_;
                    o2.lineScale_ = o1.lineScale_;
                }
    
                function processStyle(styleString) {
                    var str, alpha = 1;
    
                    styleString = String(styleString);
                    if (styleString.substring(0, 3) == 'rgb') {
                        var start = styleString.indexOf('(', 3);
                        var end = styleString.indexOf(')', start + 1);
                        var guts = styleString.substring(start + 1, end).split(',');
    
                        str = '#';
                        for (var i = 0; i < 3; i++) {
                            str += dec2hex[Number(guts[i])];
                        }
    
                        if (guts.length == 4 && styleString.substr(3, 1) == 'a') {
                            alpha = guts[3];
                        }
                    } else {
                        str = styleString;
                    }
    
                    return { color: str, alpha: alpha };
                }
    
                function processLineCap(lineCap) {
                    switch (lineCap) {
                        case 'butt':
                            return 'flat';
                        case 'round':
                            return 'round';
                        case 'square':
                        default:
                            return 'square';
                    }
                }
    
                /**
                * This class implements CanvasRenderingContext2D interface as described by
                * the WHATWG.
                * @param {HTMLElement} surfaceElement The element that the 2D context should
                * be associated with
                */
                function CanvasRenderingContext2D_(surfaceElement) {
                    this.m_ = createMatrixIdentity();
    
                    this.mStack_ = [];
                    this.aStack_ = [];
                    this.currentPath_ = [];
    
                    // Canvas context properties
                    this.strokeStyle = '#000';
                    this.fillStyle = '#000';
    
                    this.lineWidth = 1;
                    this.lineJoin = 'miter';
                    this.lineCap = 'butt';
                    this.miterLimit = Z * 1;
                    this.globalAlpha = 1;
                    this.canvas = surfaceElement;
    
                    var el = surfaceElement.ownerDocument.createElement('div');
                    el.style.width = surfaceElement.clientWidth + 'px';
                    el.style.height = surfaceElement.clientHeight + 'px';
                    el.style.overflow = 'hidden';
                    el.style.position = 'absolute';
                    surfaceElement.appendChild(el);
    
                    this.element_ = el;
                    this.arcScaleX_ = 1;
                    this.arcScaleY_ = 1;
                    this.lineScale_ = 1;
                }
    
                var contextPrototype = CanvasRenderingContext2D_.prototype;
                contextPrototype.clearRect = function () {
                    this.element_.innerHTML = '';
                };
    
                contextPrototype.beginPath = function () {
                    // TODO: Branch current matrix so that save/restore has no effect
                    //       as per safari docs.
                    this.currentPath_ = [];
                };
    
                contextPrototype.moveTo = function (aX, aY) {
                    var p = this.getCoords_(aX, aY);
                    this.currentPath_.push({ type: 'moveTo', x: p.x, y: p.y });
                    this.currentX_ = p.x;
                    this.currentY_ = p.y;
                };
    
                contextPrototype.lineTo = function (aX, aY) {
                    var p = this.getCoords_(aX, aY);
                    this.currentPath_.push({ type: 'lineTo', x: p.x, y: p.y });
    
                    this.currentX_ = p.x;
                    this.currentY_ = p.y;
                };
    
                contextPrototype.bezierCurveTo = function (aCP1x, aCP1y,
                                                aCP2x, aCP2y,
                                                aX, aY) {
                    var p = this.getCoords_(aX, aY);
                    var cp1 = this.getCoords_(aCP1x, aCP1y);
                    var cp2 = this.getCoords_(aCP2x, aCP2y);
                    bezierCurveTo(this, cp1, cp2, p);
                };
    
                // Helper function that takes the already fixed cordinates.
                function bezierCurveTo(self, cp1, cp2, p) {
                    self.currentPath_.push({
                        type: 'bezierCurveTo',
                        cp1x: cp1.x,
                        cp1y: cp1.y,
                        cp2x: cp2.x,
                        cp2y: cp2.y,
                        x: p.x,
                        y: p.y
                    });
                    self.currentX_ = p.x;
                    self.currentY_ = p.y;
                }
    
                contextPrototype.quadraticCurveTo = function (aCPx, aCPy, aX, aY) {
                    // the following is lifted almost directly from
                    // http://developer.mozilla.org/en/docs/Canvas_tutorial:Drawing_shapes
    
                    var cp = this.getCoords_(aCPx, aCPy);
                    var p = this.getCoords_(aX, aY);
    
                    var cp1 = {
                        x: this.currentX_ + 2.0 / 3.0 * (cp.x - this.currentX_),
                        y: this.currentY_ + 2.0 / 3.0 * (cp.y - this.currentY_)
                    };
                    var cp2 = {
                        x: cp1.x + (p.x - this.currentX_) / 3.0,
                        y: cp1.y + (p.y - this.currentY_) / 3.0
                    };
    
                    bezierCurveTo(this, cp1, cp2, p);
                };
    
                contextPrototype.arc = function (aX, aY, aRadius,
                                      aStartAngle, aEndAngle, aClockwise) {
                    aRadius *= Z;
                    var arcType = aClockwise ? 'at' : 'wa';
    
                    var xStart = aX + mc(aStartAngle) * aRadius - Z2;
                    var yStart = aY + ms(aStartAngle) * aRadius - Z2;
    
                    var xEnd = aX + mc(aEndAngle) * aRadius - Z2;
                    var yEnd = aY + ms(aEndAngle) * aRadius - Z2;
    
                    // IE won't render arches drawn counter clockwise if xStart == xEnd.
                    if (xStart == xEnd && !aClockwise) {
                        xStart += 0.125; // Offset xStart by 1/80 of a pixel. Use something
                        // that can be represented in binary
                    }
    
                    var p = this.getCoords_(aX, aY);
                    var pStart = this.getCoords_(xStart, yStart);
                    var pEnd = this.getCoords_(xEnd, yEnd);
    
                    this.currentPath_.push({ type: arcType,
                        x: p.x,
                        y: p.y,
                        radius: aRadius,
                        xStart: pStart.x,
                        yStart: pStart.y,
                        xEnd: pEnd.x,
                        yEnd: pEnd.y
                    });
    
                };
    
                contextPrototype.rect = function (aX, aY, aWidth, aHeight) {
                    this.moveTo(aX, aY);
                    this.lineTo(aX + aWidth, aY);
                    this.lineTo(aX + aWidth, aY + aHeight);
                    this.lineTo(aX, aY + aHeight);
                    this.closePath();
                };
    
                contextPrototype.strokeRect = function (aX, aY, aWidth, aHeight) {
                    var oldPath = this.currentPath_;
                    this.beginPath();
    
                    this.moveTo(aX, aY);
                    this.lineTo(aX + aWidth, aY);
                    this.lineTo(aX + aWidth, aY + aHeight);
                    this.lineTo(aX, aY + aHeight);
                    this.closePath();
                    this.stroke();
    
                    this.currentPath_ = oldPath;
                };
    
                contextPrototype.fillRect = function (aX, aY, aWidth, aHeight) {
                    var oldPath = this.currentPath_;
                    this.beginPath();
    
                    this.moveTo(aX, aY);
                    this.lineTo(aX + aWidth, aY);
                    this.lineTo(aX + aWidth, aY + aHeight);
                    this.lineTo(aX, aY + aHeight);
                    this.closePath();
                    this.fill();
    
                    this.currentPath_ = oldPath;
                };
    
                contextPrototype.createLinearGradient = function (aX0, aY0, aX1, aY1) {
                    var gradient = new CanvasGradient_('gradient');
                    gradient.x0_ = aX0;
                    gradient.y0_ = aY0;
                    gradient.x1_ = aX1;
                    gradient.y1_ = aY1;
                    return gradient;
                };
    
                contextPrototype.createRadialGradient = function (aX0, aY0, aR0,
                                                       aX1, aY1, aR1) {
                    var gradient = new CanvasGradient_('gradientradial');
                    gradient.x0_ = aX0;
                    gradient.y0_ = aY0;
                    gradient.r0_ = aR0;
                    gradient.x1_ = aX1;
                    gradient.y1_ = aY1;
                    gradient.r1_ = aR1;
                    return gradient;
                };
    
                contextPrototype.drawImage = function (image, var_args) {
                    var dx, dy, dw, dh, sx, sy, sw, sh;
    
                    // to find the original width we overide the width and height
                    var oldRuntimeWidth = image.runtimeStyle.width;
                    var oldRuntimeHeight = image.runtimeStyle.height;
                    image.runtimeStyle.width = 'auto';
                    image.runtimeStyle.height = 'auto';
    
                    // get the original size
                    var w = image.width;
                    var h = image.height;
    
                    // and remove overides
                    image.runtimeStyle.width = oldRuntimeWidth;
                    image.runtimeStyle.height = oldRuntimeHeight;
    
                    if (arguments.length == 3) {
                        dx = arguments[1];
                        dy = arguments[2];
                        sx = sy = 0;
                        sw = dw = w;
                        sh = dh = h;
                    } else if (arguments.length == 5) {
                        dx = arguments[1];
                        dy = arguments[2];
                        dw = arguments[3];
                        dh = arguments[4];
                        sx = sy = 0;
                        sw = w;
                        sh = h;
                    } else if (arguments.length == 9) {
                        sx = arguments[1];
                        sy = arguments[2];
                        sw = arguments[3];
                        sh = arguments[4];
                        dx = arguments[5];
                        dy = arguments[6];
                        dw = arguments[7];
                        dh = arguments[8];
                    } else {
                        throw Error('Invalid number of arguments');
                    }
    
                    var d = this.getCoords_(dx, dy);
    
                    var w2 = sw / 2;
                    var h2 = sh / 2;
    
                    var vmlStr = [];
    
                    var W = 10;
                    var H = 10;
    
                    // For some reason that I've now forgotten, using divs didn't work
                    vmlStr.push(' <g_vml_:group',
                    ' coordsize="', Z * W, ',', Z * H, '"',
                    ' coordorigin="0,0"',
                    ' style="width:', W, 'px;height:', H, 'px;position:absolute;');
    
                    // If filters are necessary (rotation exists), create them
                    // filters are bog-slow, so only create them if abbsolutely necessary
                    // The following check doesn't account for skews (which don't exist
                    // in the canvas spec (yet) anyway.
    
                    if (this.m_[0][0] != 1 || this.m_[0][1]) {
                        var filter = [];
    
                        // Note the 12/21 reversal
                        filter.push('M11=', this.m_[0][0], ',',
                      'M12=', this.m_[1][0], ',',
                      'M21=', this.m_[0][1], ',',
                      'M22=', this.m_[1][1], ',',
                      'Dx=', mr(d.x / Z), ',',
                      'Dy=', mr(d.y / Z), '');
    
                        // Bounding box calculation (need to minimize displayed area so that
                        // filters don't waste time on unused pixels.
                        var max = d;
                        var c2 = this.getCoords_(dx + dw, dy);
                        var c3 = this.getCoords_(dx, dy + dh);
                        var c4 = this.getCoords_(dx + dw, dy + dh);
    
                        max.x = m.max(max.x, c2.x, c3.x, c4.x);
                        max.y = m.max(max.y, c2.y, c3.y, c4.y);
    
                        vmlStr.push('padding:0 ', mr(max.x / Z), 'px ', mr(max.y / Z),
                      'px 0;filter:progid:DXImageTransform.Microsoft.Matrix(',
                      filter.join(''), ", sizingmethod='clip');")
                    } else {
                        vmlStr.push('top:', mr(d.y / Z), 'px;left:', mr(d.x / Z), 'px;');
                    }
    
                    vmlStr.push(' ">',
                    '<g_vml_:image src="', image.src, '"',
                    ' style="width:', Z * dw, 'px;',
                    ' height:', Z * dh, 'px;"',
                    ' cropleft="', sx / w, '"',
                    ' croptop="', sy / h, '"',
                    ' cropright="', (w - sx - sw) / w, '"',
                    ' cropbottom="', (h - sy - sh) / h, '"',
                    ' />',
                    '</g_vml_:group>');
    
                    this.element_.insertAdjacentHTML('BeforeEnd',
                                        vmlStr.join(''));
                };
    
                contextPrototype.stroke = function (aFill) {
                    var lineStr = [];
                    var lineOpen = false;
                    var a = processStyle(aFill ? this.fillStyle : this.strokeStyle);
                    var color = a.color;
                    var opacity = a.alpha * this.globalAlpha;
    
                    var W = 10;
                    var H = 10;
    
                    lineStr.push('<g_vml_:shape',
                     ' filled="', !!aFill, '"',
                     ' style="position:absolute;width:', W, 'px;height:', H, 'px;"',
                     ' coordorigin="0 0" coordsize="', Z * W, ' ', Z * H, '"',
                     ' stroked="', !aFill, '"',
                     ' path="');
    
                    var newSeq = false;
                    var min = { x: null, y: null };
                    var max = { x: null, y: null };
    
                    for (var i = 0; i < this.currentPath_.length; i++) {
                        var p = this.currentPath_[i];
                        var c;
    
                        switch (p.type) {
                            case 'moveTo':
                                c = p;
                                lineStr.push(' m ', mr(p.x), ',', mr(p.y));
                                break;
                            case 'lineTo':
                                lineStr.push(' l ', mr(p.x), ',', mr(p.y));
                                break;
                            case 'close':
                                lineStr.push(' x ');
                                p = null;
                                break;
                            case 'bezierCurveTo':
                                lineStr.push(' c ',
                           mr(p.cp1x), ',', mr(p.cp1y), ',',
                           mr(p.cp2x), ',', mr(p.cp2y), ',',
                           mr(p.x), ',', mr(p.y));
                                break;
                            case 'at':
                            case 'wa':
                                lineStr.push(' ', p.type, ' ',
                           mr(p.x - this.arcScaleX_ * p.radius), ',',
                           mr(p.y - this.arcScaleY_ * p.radius), ' ',
                           mr(p.x + this.arcScaleX_ * p.radius), ',',
                           mr(p.y + this.arcScaleY_ * p.radius), ' ',
                           mr(p.xStart), ',', mr(p.yStart), ' ',
                           mr(p.xEnd), ',', mr(p.yEnd));
                                break;
                        }
    
    
                        // TODO: Following is broken for curves due to
                        //       move to proper paths.
    
                        // Figure out dimensions so we can do gradient fills
                        // properly
                        if (p) {
                            if (min.x == null || p.x < min.x) {
                                min.x = p.x;
                            }
                            if (max.x == null || p.x > max.x) {
                                max.x = p.x;
                            }
                            if (min.y == null || p.y < min.y) {
                                min.y = p.y;
                            }
                            if (max.y == null || p.y > max.y) {
                                max.y = p.y;
                            }
                        }
                    }
                    lineStr.push(' ">');
    
                    if (!aFill) {
                        var lineWidth = this.lineScale_ * this.lineWidth;
    
                        // VML cannot correctly render a line if the width is less than 1px.
                        // In that case, we dilute the color to make the line look thinner.
                        if (lineWidth < 1) {
                            opacity *= lineWidth;
                        }
    
                        lineStr.push(
            '<g_vml_:stroke',
            ' opacity="', opacity, '"',
            ' joinstyle="', this.lineJoin, '"',
            ' miterlimit="', this.miterLimit, '"',
            ' endcap="', processLineCap(this.lineCap), '"',
            ' weight="', lineWidth, 'px"',
            ' color="', color, '" />'
          );
                    } else if (typeof this.fillStyle == 'object') {
                        var fillStyle = this.fillStyle;
                        var angle = 0;
                        var focus = { x: 0, y: 0 };
    
                        // additional offset
                        var shift = 0;
                        // scale factor for offset
                        var expansion = 1;
    
                        if (fillStyle.type_ == 'gradient') {
                            var x0 = fillStyle.x0_ / this.arcScaleX_;
                            var y0 = fillStyle.y0_ / this.arcScaleY_;
                            var x1 = fillStyle.x1_ / this.arcScaleX_;
                            var y1 = fillStyle.y1_ / this.arcScaleY_;
                            var p0 = this.getCoords_(x0, y0);
                            var p1 = this.getCoords_(x1, y1);
                            var dx = p1.x - p0.x;
                            var dy = p1.y - p0.y;
                            angle = Math.atan2(dx, dy) * 180 / Math.PI;
    
                            // The angle should be a non-negative number.
                            if (angle < 0) {
                                angle += 360;
                            }
    
                            // Very small angles produce an unexpected result because they are
                            // converted to a scientific notation string.
                            if (angle < 1e-6) {
                                angle = 0;
                            }
                        } else {
                            var p0 = this.getCoords_(fillStyle.x0_, fillStyle.y0_);
                            var width = max.x - min.x;
                            var height = max.y - min.y;
                            focus = {
                                x: (p0.x - min.x) / width,
                                y: (p0.y - min.y) / height
                            };
    
                            width /= this.arcScaleX_ * Z;
                            height /= this.arcScaleY_ * Z;
                            var dimension = m.max(width, height);
                            shift = 2 * fillStyle.r0_ / dimension;
                            expansion = 2 * fillStyle.r1_ / dimension - shift;
                        }
    
                        // We need to sort the color stops in ascending order by offset,
                        // otherwise IE won't interpret it correctly.
                        var stops = fillStyle.colors_;
                        stops.sort(function (cs1, cs2) {
                            return cs1.offset - cs2.offset;
                        });
    
                        var length = stops.length;
                        var color1 = stops[0].color;
                        var color2 = stops[length - 1].color;
                        var opacity1 = stops[0].alpha * this.globalAlpha;
                        var opacity2 = stops[length - 1].alpha * this.globalAlpha;
    
                        var colors = [];
                        for (var i = 0; i < length; i++) {
                            var stop = stops[i];
                            colors.push(stop.offset * expansion + shift + ' ' + stop.color);
                        }
    
                        // When colors attribute is used, the meanings of opacity and o:opacity2
                        // are reversed.
                        lineStr.push('<g_vml_:fill type="', fillStyle.type_, '"',
                       ' method="none" focus="100%"',
                       ' color="', color1, '"',
                       ' color2="', color2, '"',
                       ' colors="', colors.join(','), '"',
                       ' opacity="', opacity2, '"',
                       ' g_o_:opacity2="', opacity1, '"',
                       ' angle="', angle, '"',
                       ' focusposition="', focus.x, ',', focus.y, '" />');
                    } else {
                        lineStr.push('<g_vml_:fill color="', color, '" opacity="', opacity,
                       '" />');
                    }
    
                    lineStr.push('</g_vml_:shape>');
    
                    this.element_.insertAdjacentHTML('beforeEnd', lineStr.join(''));
                };
    
                contextPrototype.fill = function () {
                    this.stroke(true);
                }
    
                contextPrototype.closePath = function () {
                    this.currentPath_.push({ type: 'close' });
                };
    
                /**
                * @private
                */
                contextPrototype.getCoords_ = function (aX, aY) {
                    var m = this.m_;
                    return {
                        x: Z * (aX * m[0][0] + aY * m[1][0] + m[2][0]) - Z2,
                        y: Z * (aX * m[0][1] + aY * m[1][1] + m[2][1]) - Z2
                    }
                };
    
                contextPrototype.save = function () {
                    var o = {};
                    copyState(this, o);
                    this.aStack_.push(o);
                    this.mStack_.push(this.m_);
                    this.m_ = matrixMultiply(createMatrixIdentity(), this.m_);
                };
    
                contextPrototype.restore = function () {
                    copyState(this.aStack_.pop(), this);
                    this.m_ = this.mStack_.pop();
                };
    
                function matrixIsFinite(m) {
                    for (var j = 0; j < 3; j++) {
                        for (var k = 0; k < 2; k++) {
                            if (!isFinite(m[j][k]) || isNaN(m[j][k])) {
                                return false;
                            }
                        }
                    }
                    return true;
                }
    
                function setM(ctx, m, updateLineScale) {
                    if (!matrixIsFinite(m)) {
                        return;
                    }
                    ctx.m_ = m;
    
                    if (updateLineScale) {
                        // Get the line scale.
                        // Determinant of this.m_ means how much the area is enlarged by the
                        // transformation. So its square root can be used as a scale factor
                        // for width.
                        var det = m[0][0] * m[1][1] - m[0][1] * m[1][0];
                        ctx.lineScale_ = sqrt(abs(det));
                    }
                }
    
                contextPrototype.translate = function (aX, aY) {
                    var m1 = [
          [1, 0, 0],
          [0, 1, 0],
          [aX, aY, 1]
        ];
    
                    setM(this, matrixMultiply(m1, this.m_), false);
                };
    
                contextPrototype.rotate = function (aRot) {
                    var c = mc(aRot);
                    var s = ms(aRot);
    
                    var m1 = [
          [c, s, 0],
          [-s, c, 0],
          [0, 0, 1]
        ];
    
                    setM(this, matrixMultiply(m1, this.m_), false);
                };
    
                contextPrototype.scale = function (aX, aY) {
                    this.arcScaleX_ *= aX;
                    this.arcScaleY_ *= aY;
                    var m1 = [
          [aX, 0, 0],
          [0, aY, 0],
          [0, 0, 1]
        ];
    
                    setM(this, matrixMultiply(m1, this.m_), true);
                };
    
                contextPrototype.transform = function (m11, m12, m21, m22, dx, dy) {
                    var m1 = [
          [m11, m12, 0],
          [m21, m22, 0],
          [dx, dy, 1]
        ];
    
                    setM(this, matrixMultiply(m1, this.m_), true);
                };
    
                contextPrototype.setTransform = function (m11, m12, m21, m22, dx, dy) {
                    var m = [
          [m11, m12, 0],
          [m21, m22, 0],
          [dx, dy, 1]
        ];
    
                    setM(this, m, true);
                };
    
                /******** STUBS ********/
                contextPrototype.clip = function () {
                    // TODO: Implement
                };
    
                contextPrototype.arcTo = function () {
                    // TODO: Implement
                };
    
                contextPrototype.createPattern = function () {
                    return new CanvasPattern_;
                };
    
                // Gradient / Pattern Stubs
                function CanvasGradient_(aType) {
                    this.type_ = aType;
                    this.x0_ = 0;
                    this.y0_ = 0;
                    this.r0_ = 0;
                    this.x1_ = 0;
                    this.y1_ = 0;
                    this.r1_ = 0;
                    this.colors_ = [];
                }
    
                CanvasGradient_.prototype.addColorStop = function (aOffset, aColor) {
                    aColor = processStyle(aColor);
                    this.colors_.push({ offset: aOffset,
                        color: aColor.color,
                        alpha: aColor.alpha
                    });
                };
    
                function CanvasPattern_() { }
    
                // set up externs
                G_vmlCanvasManager = G_vmlCanvasManager_;
                CanvasRenderingContext2D = CanvasRenderingContext2D_;
                CanvasGradient = CanvasGradient_;
                CanvasPattern = CanvasPattern_;
    
            })();
    
        } // if
    
    
    
        $.fn.ccsCaptcha = function (config) {
            this.each(function () {
                drawCaptcha(this, config.url, config.backgroundColor, config.foregroundColor);
            });
        };
    })(jQuery);