if (!document.createElement('canvas').getContext) {

(function() {
var m = Math;
var mr = m.round;
var ms = m.sin;
var mc = m.cos;
var abs = m.abs;
var sqrt = m.sqrt;
var Z = 10;
var Z2 = Z / 2;
function getContext() {return this.context_ || (this.context_ = new CanvasRenderingContext2D_(this));}
var slice = Array.prototype.slice;
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;
doc.createElement('canvas');
doc.attachEvent('onreadystatechange', bind(this.init_, this, doc));
}
},
init_: function(doc) {
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');
}
if (!doc.styleSheets['ex_canvas_']) {
var ss = doc.createStyleSheet();
ss.owningElement.id = 'ex_canvas_';
ss.cssText = 'canvas{display:inline-block;overflow:hidden;'+'text-align:left;width:300px;height:150px}'+'g_vml_\\:*{behavior:url(#default#VML)}'+'g_o_\\:*{behavior:url(#default#VML)}';
}
var els = doc.getElementsByTagName('canvas');
for (var i = 0; i < els.length; i++) {
this.initElement(els[i]);
}
},
initElement: function(el) {
if (!el.getContext) {
el.getContext = getContext;
el.innerHTML = '';
el.attachEvent('onpropertychange', onPropertyChange);
el.attachEvent('onresize', onResize);
var attrs = el.attributes;
if (attrs.width && attrs.width.specified) {
el.style.width = attrs.width.nodeValue + 'px';
} else {
el.width = el.clientWidth;
}
if (attrs.height && attrs.height.specified) {
el.style.height = attrs.height.nodeValue + 'px';
} else {
el.height = el.clientHeight;
}
}
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();
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';}
}
function CanvasRenderingContext2D_(surfaceElement) {
this.m_ = createMatrixIdentity();this.mStack_ = [];this.aStack_ = [];this.currentPath_ = [];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() {
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);
};
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) {
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;
if (xStart == xEnd && !aClockwise) {
xStart += 0.125; // Offset xStart by 1/80 of a pixel. Use something
}
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;var oldRuntimeWidth = image.runtimeStyle.width;var oldRuntimeHeight = image.runtimeStyle.height;image.runtimeStyle.width = 'auto';image.runtimeStyle.height = 'auto';var w = image.width;var h = image.height;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;
vmlStr.push(' <g_vml_:group', ' coordsize="', Z * W, ',', Z * H, '"', ' coordorigin="0,0"' , ' style="width:', W, 'px;height:', H, 'px;position:absolute;');
if (this.m_[0][0] != 1 || this.m_[0][1]) {
var filter = [];
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), '');
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;
}
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;
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};var shift = 0;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;
if (angle < 0) {angle += 360;}
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;
}
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);
}
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'});
};
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) {
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);
};
contextPrototype.clip = function() {
// TODO
};
contextPrototype.arcTo = function() {
// TODO
};
contextPrototype.createPattern = function() {
return new CanvasPattern_;
};
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_() {}
G_vmlCanvasManager = G_vmlCanvasManager_;
CanvasRenderingContext2D = CanvasRenderingContext2D_;
CanvasGradient = CanvasGradient_;
CanvasPattern = CanvasPattern_;
})();
}