text: /*
   * canvg.js - Javascript SVG parser and renderer on Canvas
   * MIT Licensed
   * Gabe Lerner (gabelerner@gmail.com)
   * http://code.google.com/p/canvg/
   *
   * Requires: rgbcolor.js - http://www.phpied.com/rgb-color-parser-in-javascript/
   */
  (function(){
  	// canvg(target, s)
  	// empty parameters: replace all 'svg' elements on page with 'canvas' elements
  	// target: canvas element or the id of a canvas element
  	// s: svg string, url to svg file, or xml document
  	// opts: optional hash of options
  	//		 ignoreMouse: true => ignore mouse events
  	//		 ignoreAnimation: true => ignore animations
  	//		 ignoreDimensions: true => does not try to resize canvas
  	//		 ignoreClear: true => does not clear canvas
  	//		 offsetX: int => draws at a x offset
  	//		 offsetY: int => draws at a y offset
  	//		 scaleWidth: int => scales horizontally to width
  	//		 scaleHeight: int => scales vertically to height
  	//		 renderCallback: function => will call the function after the first render is completed
  	//		 forceRedraw: function => will call the function on every frame, if it returns true, will redraw
  	this.canvg = function (target, s, opts) {
  		// no parameters
  		if (target == null && s == null && opts == null) {
  			var svgTags = document.querySelectorAll('svg');
  			for (var i=0; i<svgTags.length; i++) {
  				var svgTag = svgTags[i];
  				var c = document.createElement('canvas');
  				c.width = svgTag.clientWidth;
  				c.height = svgTag.clientHeight;
  				svgTag.parentNode.insertBefore(c, svgTag);
  				svgTag.parentNode.removeChild(svgTag);
  				var div = document.createElement('div');
  				div.appendChild(svgTag);
  				canvg(c, div.innerHTML);
  			}
  			return;
  		}
  
  		if (typeof target == 'string') {
  			target = document.getElementById(target);
  		}
  
  		// store class on canvas
  		if (target.svg != null) target.svg.stop();
  		var svg = build(opts || {});
  		// on i.e. 8 for flash canvas, we can't assign the property so check for it
  		if (!(target.childNodes.length == 1 && target.childNodes[0].nodeName == 'OBJECT')) target.svg = svg;
  
  		var ctx = target.getContext('2d');
  		if (typeof(s.documentElement) != 'undefined') {
  			// load from xml doc
  			svg.loadXmlDoc(ctx, s);
  		}
  		else if (s.substr(0,1) == '<') {
  			// load from xml string
  			svg.loadXml(ctx, s);
  		}
  		else {
  			// load from url
  			svg.load(ctx, s);
  		}
  	}
  
  	// see https://developer.mozilla.org/en-US/docs/Web/API/Element.matches
  	var matchesSelector;
  	if (typeof(Element.prototype.matches) != 'undefined') {
  		matchesSelector = function(node, selector) {
  			return node.matches(selector);
  		};
  	} else if (typeof(Element.prototype.webkitMatchesSelector) != 'undefined') {
  		matchesSelector = function(node, selector) {
  			return node.webkitMatchesSelector(selector);
  		};
  	} else if (typeof(Element.prototype.mozMatchesSelector) != 'undefined') {
  		matchesSelector = function(node, selector) {
  			return node.mozMatchesSelector(selector);
  		};
  	} else if (typeof(Element.prototype.msMatchesSelector) != 'undefined') {
  		matchesSelector = function(node, selector) {
  			return node.msMatchesSelector(selector);
  		};
  	} else if (typeof(Element.prototype.oMatchesSelector) != 'undefined') {
  		matchesSelector = function(node, selector) {
  			return node.oMatchesSelector(selector);
  		};
  	} else {
  		// requires Sizzle: https://github.com/jquery/sizzle/wiki/Sizzle-Documentation
  		// without Sizzle, this is a ReferenceError
  		matchesSelector = Sizzle.matchesSelector;
  	}
  
  	// slightly modified version of https://github.com/keeganstreet/specificity/blob/master/specificity.js
  	var attributeRegex = /(\[[^\]]+\])/g;
  	var idRegex = /(#[^\s\+>~\.\[:]+)/g;
  	var classRegex = /(\.[^\s\+>~\.\[:]+)/g;
  	var pseudoElementRegex = /(::[^\s\+>~\.\[:]+|:first-line|:first-letter|:before|:after)/gi;
  	var pseudoClassWithBracketsRegex = /(:[\w-]+\([^\)]*\))/gi;
  	var pseudoClassRegex = /(:[^\s\+>~\.\[:]+)/g;
  	var elementRegex = /([^\s\+>~\.\[:]+)/g;
  	function getSelectorSpecificity(selector) {
  		var typeCount = [0, 0, 0];
  		var findMatch = function(regex, type) {
  			var matches = selector.match(regex);
  			if (matches == null) {
  				return;
  			}
  			typeCount[type] += matches.length;
  			selector = selector.replace(regex, ' ');
  		};
  
  		selector = selector.replace(/:not\(([^\)]*)\)/g, '     $1 ');
  		selector = selector.replace(/{[^]*/gm, ' ');
  		findMatch(attributeRegex, 1);
  		findMatch(idRegex, 0);
  		findMatch(classRegex, 1);
  		findMatch(pseudoElementRegex, 2);
  		findMatch(pseudoClassWithBracketsRegex, 1);
  		findMatch(pseudoClassRegex, 1);
  		selector = selector.replace(/[\*\s\+>~]/g, ' ');
  		selector = selector.replace(/[#\.]/g, ' ');
  		findMatch(elementRegex, 2);
  		return typeCount.join('');
  	}
  
  	function build(opts) {
  		var svg = { opts: opts };
  
  		svg.FRAMERATE = 30;
  		svg.MAX_VIRTUAL_PIXELS = 30000;
  
  		svg.log = function(msg) {};
  		if (svg.opts['log'] == true && typeof(console) != 'undefined') {
  			svg.log = function(msg) { console.log(msg); };
  		};
  
  		// globals
  		svg.init = function(ctx) {
  			var uniqueId = 0;
  			svg.UniqueId = function () { uniqueId++; return 'canvg' + uniqueId;	};
  			svg.Definitions = {};
  			svg.Styles = {};
  			svg.StylesSpecificity = {};
  			svg.Animations = [];
  			svg.Images = [];
  			svg.ctx = ctx;
  			svg.ViewPort = new (function () {
  				this.viewPorts = [];
  				this.Clear = function() { this.viewPorts = []; }
  				this.SetCurrent = function(width, height) { this.viewPorts.push({ width: width, height: height }); }
  				this.RemoveCurrent = function() { this.viewPorts.pop(); }
  				this.Current = function() { return this.viewPorts[this.viewPorts.length - 1]; }
  				this.width = function() { return this.Current().width; }
  				this.height = function() { return this.Current().height; }
  				this.ComputeSize = function(d) {
  					if (d != null && typeof(d) == 'number') return d;
  					if (d == 'x') return this.width();
  					if (d == 'y') return this.height();
  					return Math.sqrt(Math.pow(this.width(), 2) + Math.pow(this.height(), 2)) / Math.sqrt(2);
  				}
  			});
  		}
  		svg.init();
  
  		// images loaded
  		svg.ImagesLoaded = function() {
  			for (var i=0; i<svg.Images.length; i++) {
  				if (!svg.Images[i].loaded) return false;
  			}
  			return true;
  		}
  
  		// trim
  		svg.trim = function(s) { return s.replace(/^\s+|\s+$/g, ''); }
  
  		// compress spaces
  		svg.compressSpaces = function(s) { return s.replace(/[\s\r\t\n]+/gm,' '); }
  
  		// ajax
  		svg.ajax = function(url) {
  			var AJAX;
  			if(window.XMLHttpRequest){AJAX=new XMLHttpRequest();}
  			else{AJAX=new ActiveXObject('Microsoft.XMLHTTP');}
  			if(AJAX){
  			   AJAX.open('GET',url,false);
  			   AJAX.send(null);
  			   return AJAX.responseText;
  			}
  			return null;
  		}
  
  		// parse xml
  		svg.parseXml = function(xml) {
  			if (typeof(Windows) != 'undefined' && typeof(Windows.Data) != 'undefined' && typeof(Windows.Data.Xml) != 'undefined') {
  				var xmlDoc = new Windows.Data.Xml.Dom.XmlDocument();
  				var settings = new Windows.Data.Xml.Dom.XmlLoadSettings();
  				settings.prohibitDtd = false;
  				xmlDoc.loadXml(xml, settings);
  				return xmlDoc;
  			}
  			else if (window.DOMParser)
  			{
  				var parser = new DOMParser();
  				return parser.parseFromString(xml, 'text/xml');
  			}
  			else
  			{
  				xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
  				var xmlDoc = new ActiveXObject('Microsoft.XMLDOM');
  				xmlDoc.async = 'false';
  				xmlDoc.loadXML(xml);
  				return xmlDoc;
  			}
  		}
  
  		svg.Property = function(name, value) {
  			this.name = name;
  			this.value = value;
  		}
  			svg.Property.prototype.getValue = function() {
  				return this.value;
  			}
  
  			svg.Property.prototype.hasValue = function() {
  				return (this.value != null && this.value !== '');
  			}
  
  			// return the numerical value of the property
  			svg.Property.prototype.numValue = function() {
  				if (!this.hasValue()) return 0;
  
  				var n = parseFloat(this.value);
  				if ((this.value + '').match(/%$/)) {
  					n = n / 100.0;
  				}
  				return n;
  			}
  
  			svg.Property.prototype.valueOrDefault = function(def) {
  				if (this.hasValue()) return this.value;
  				return def;
  			}
  
  			svg.Property.prototype.numValueOrDefault = function(def) {
  				if (this.hasValue()) return this.numValue();
  				return def;
  			}
  
  			// color extensions
  				// augment the current color value with the opacity
  				svg.Property.prototype.addOpacity = function(opacityProp) {
  					var newValue = this.value;
  					if (opacityProp.value != null && opacityProp.value != '' && typeof(this.value)=='string') { // can only add opacity to colors, not patterns
  						var color = new RGBColor(this.value);
  						if (color.ok) {
  							newValue = 'rgba(' + color.r + ', ' + color.g + ', ' + color.b + ', ' + opacityProp.numValue() + ')';
  						}
  					}
  					return new svg.Property(this.name, newValue);
  				}
  
  			// definition extensions
  				// get the definition from the definitions table
  				svg.Property.prototype.getDefinition = function() {
  					var name = this.value.match(/#([^\)'"]+)/);
  					if (name) { name = name[1]; }
  					if (!name) { name = this.value; }
  					return svg.Definitions[name];
  				}
  
  				svg.Property.prototype.isUrlDefinition = function() {
  					return this.value.indexOf('url(') == 0
  				}
  
  				svg.Property.prototype.getFillStyleDefinition = function(e, opacityProp) {
  					var def = this.getDefinition();
  
  					// gradient
  					if (def != null && def.createGradient) {
  						return def.createGradient(svg.ctx, e, opacityProp);
  					}
  
  					// pattern
  					if (def != null && def.createPattern) {
  						if (def.getHrefAttribute().hasValue()) {
  							var pt = def.attribute('patternTransform');
  							def = def.getHrefAttribute().getDefinition();
  							if (pt.hasValue()) { def.attribute('patternTransform', true).value = pt.value; }
  						}
  						return def.createPattern(svg.ctx, e);
  					}
  
  					return null;
  				}
  
  			// length extensions
  				svg.Property.prototype.getDPI = function(viewPort) {
  					return 96.0; // TODO: compute?
  				}
  
  				svg.Property.prototype.getEM = function(viewPort) {
  					var em = 12;
  
  					var fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
  					if (fontSize.hasValue()) em = fontSize.toPixels(viewPort);
  
  					return em;
  				}
  
  				svg.Property.prototype.getUnits = function() {
  					var s = this.value+'';
  					return s.replace(/[0-9\.\-]/g,'');
  				}
  
  				// get the length as pixels
  				svg.Property.prototype.toPixels = function(viewPort, processPercent) {
  					if (!this.hasValue()) return 0;
  					var s = this.value+'';
  					if (s.match(/em$/)) return this.numValue() * this.getEM(viewPort);
  					if (s.match(/ex$/)) return this.numValue() * this.getEM(viewPort) / 2.0;
  					if (s.match(/px$/)) return this.numValue();
  					if (s.match(/pt$/)) return this.numValue() * this.getDPI(viewPort) * (1.0 / 72.0);
  					if (s.match(/pc$/)) return this.numValue() * 15;
  					if (s.match(/cm$/)) return this.numValue() * this.getDPI(viewPort) / 2.54;
  					if (s.match(/mm$/)) return this.numValue() * this.getDPI(viewPort) / 25.4;
  					if (s.match(/in$/)) return this.numValue() * this.getDPI(viewPort);
  					if (s.match(/%$/)) return this.numValue() * svg.ViewPort.ComputeSize(viewPort);
  					var n = this.numValue();
  					if (processPercent && n < 1.0) return n * svg.ViewPort.ComputeSize(viewPort);
  					return n;
  				}
  
  			// time extensions
  				// get the time as milliseconds
  				svg.Property.prototype.toMilliseconds = function() {
  					if (!this.hasValue()) return 0;
  					var s = this.value+'';
  					if (s.match(/s$/)) return this.numValue() * 1000;
  					if (s.match(/ms$/)) return this.numValue();
  					return this.numValue();
  				}
  
  			// angle extensions
  				// get the angle as radians
  				svg.Property.prototype.toRadians = function() {
  					if (!this.hasValue()) return 0;
  					var s = this.value+'';
  					if (s.match(/deg$/)) return this.numValue() * (Math.PI / 180.0);
  					if (s.match(/grad$/)) return this.numValue() * (Math.PI / 200.0);
  					if (s.match(/rad$/)) return this.numValue();
  					return this.numValue() * (Math.PI / 180.0);
  				}
  
  			// text extensions
  				// get the text baseline
  				var textBaselineMapping = {
  					'baseline': 'alphabetic',
  					'before-edge': 'top',
  					'text-before-edge': 'top',
  					'middle': 'middle',
  					'central': 'middle',
  					'after-edge': 'bottom',
  					'text-after-edge': 'bottom',
  					'ideographic': 'ideographic',
  					'alphabetic': 'alphabetic',
  					'hanging': 'hanging',
  					'mathematical': 'alphabetic'
  				};
  				svg.Property.prototype.toTextBaseline = function () {
  					if (!this.hasValue()) return null;
  					return textBaselineMapping[this.value];
  				}
  
  		// fonts
  		svg.Font = new (function() {
  			this.Styles = 'normal|italic|oblique|inherit';
  			this.Variants = 'normal|small-caps|inherit';
  			this.Weights = 'normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900|inherit';
  
  			this.CreateFont = function(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
  				var f = inherit != null ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
  				return {
  					fontFamily: fontFamily || f.fontFamily,
  					fontSize: fontSize || f.fontSize,
  					fontStyle: fontStyle || f.fontStyle,
  					fontWeight: fontWeight || f.fontWeight,
  					fontVariant: fontVariant || f.fontVariant,
  					toString: function () { return [this.fontStyle, this.fontVariant, this.fontWeight, this.fontSize, this.fontFamily].join(' ') }
  				}
  			}
  
  			var that = this;
  			this.Parse = function(s) {
  				var f = {};
  				var d = svg.trim(svg.compressSpaces(s || '')).split(' ');
  				var set = { fontSize: false, fontStyle: false, fontWeight: false, fontVariant: false }
  				var ff = '';
  				for (var i=0; i<d.length; i++) {
  					if (!set.fontStyle && that.Styles.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontStyle = d[i]; set.fontStyle = true; }
  					else if (!set.fontVariant && that.Variants.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontVariant = d[i]; set.fontStyle = set.fontVariant = true;	}
  					else if (!set.fontWeight && that.Weights.indexOf(d[i]) != -1) {	if (d[i] != 'inherit') f.fontWeight = d[i]; set.fontStyle = set.fontVariant = set.fontWeight = true; }
  					else if (!set.fontSize) { if (d[i] != 'inherit') f.fontSize = d[i].split('/')[0]; set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true; }
  					else { if (d[i] != 'inherit') ff += d[i]; }
  				} if (ff != '') f.fontFamily = ff;
  				return f;
  			}
  		});
  
  		// points and paths
  		svg.ToNumberArray = function(s) {
  			var a = svg.trim(svg.compressSpaces((s || '').replace(/,/g, ' '))).split(' ');
  			for (var i=0; i<a.length; i++) {
  				a[i] = parseFloat(a[i]);
  			}
  			return a;
  		}
  		svg.Point = function(x, y) {
  			this.x = x;
  			this.y = y;
  		}
  			svg.Point.prototype.angleTo = function(p) {
  				return Math.atan2(p.y - this.y, p.x - this.x);
  			}
  
  			svg.Point.prototype.applyTransform = function(v) {
  				var xp = this.x * v[0] + this.y * v[2] + v[4];
  				var yp = this.x * v[1] + this.y * v[3] + v[5];
  				this.x = xp;
  				this.y = yp;
  			}
  
  		svg.CreatePoint = function(s) {
  			var a = svg.ToNumberArray(s);
  			return new svg.Point(a[0], a[1]);
  		}
  		svg.CreatePath = function(s) {
  			var a = svg.ToNumberArray(s);
  			var path = [];
  			for (var i=0; i<a.length; i+=2) {
  				path.push(new svg.Point(a[i], a[i+1]));
  			}
  			return path;
  		}
  
  		// bounding box
  		svg.BoundingBox = function(x1, y1, x2, y2) { // pass in initial points if you want
  			this.x1 = Number.NaN;
  			this.y1 = Number.NaN;
  			this.x2 = Number.NaN;
  			this.y2 = Number.NaN;
  
  			this.x = function() { return this.x1; }
  			this.y = function() { return this.y1; }
  			this.width = function() { return this.x2 - this.x1; }
  			this.height = function() { return this.y2 - this.y1; }
  
  			this.addPoint = function(x, y) {
  				if (x != null) {
  					if (isNaN(this.x1) || isNaN(this.x2)) {
  						this.x1 = x;
  						this.x2 = x;
  					}
  					if (x < this.x1) this.x1 = x;
  					if (x > this.x2) this.x2 = x;
  				}
  
  				if (y != null) {
  					if (isNaN(this.y1) || isNaN(this.y2)) {
  						this.y1 = y;
  						this.y2 = y;
  					}
  					if (y < this.y1) this.y1 = y;
  					if (y > this.y2) this.y2 = y;
  				}
  			}
  			this.addX = function(x) { this.addPoint(x, null); }
  			this.addY = function(y) { this.addPoint(null, y); }
  
  			this.addBoundingBox = function(bb) {
  				this.addPoint(bb.x1, bb.y1);
  				this.addPoint(bb.x2, bb.y2);
  			}
  
  			this.addQuadraticCurve = function(p0x, p0y, p1x, p1y, p2x, p2y) {
  				var cp1x = p0x + 2/3 * (p1x - p0x); // CP1 = QP0 + 2/3 *(QP1-QP0)
  				var cp1y = p0y + 2/3 * (p1y - p0y); // CP1 = QP0 + 2/3 *(QP1-QP0)
  				var cp2x = cp1x + 1/3 * (p2x - p0x); // CP2 = CP1 + 1/3 *(QP2-QP0)
  				var cp2y = cp1y + 1/3 * (p2y - p0y); // CP2 = CP1 + 1/3 *(QP2-QP0)
  				this.addBezierCurve(p0x, p0y, cp1x, cp2x, cp1y,	cp2y, p2x, p2y);
  			}
  
  			this.addBezierCurve = function(p0x, p0y, p1x, p1y, p2x, p2y, p3x, p3y) {
  				// from http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
  				var p0 = [p0x, p0y], p1 = [p1x, p1y], p2 = [p2x, p2y], p3 = [p3x, p3y];
  				this.addPoint(p0[0], p0[1]);
  				this.addPoint(p3[0], p3[1]);
  
  				for (i=0; i<=1; i++) {
  					var f = function(t) {
  						return Math.pow(1-t, 3) * p0[i]
  						+ 3 * Math.pow(1-t, 2) * t * p1[i]
  						+ 3 * (1-t) * Math.pow(t, 2) * p2[i]
  						+ Math.pow(t, 3) * p3[i];
  					}
  
  					var b = 6 * p0[i] - 12 * p1[i] + 6 * p2[i];
  					var a = -3 * p0[i] + 9 * p1[i] - 9 * p2[i] + 3 * p3[i];
  					var c = 3 * p1[i] - 3 * p0[i];
  
  					if (a == 0) {
  						if (b == 0) continue;
  						var t = -c / b;
  						if (0 < t && t < 1) {
  							if (i == 0) this.addX(f(t));
  							if (i == 1) this.addY(f(t));
  						}
  						continue;
  					}
  
  					var b2ac = Math.pow(b, 2) - 4 * c * a;
  					if (b2ac < 0) continue;
  					var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
  					if (0 < t1 && t1 < 1) {
  						if (i == 0) this.addX(f(t1));
  						if (i == 1) this.addY(f(t1));
  					}
  					var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
  					if (0 < t2 && t2 < 1) {
  						if (i == 0) this.addX(f(t2));
  						if (i == 1) this.addY(f(t2));
  					}
  				}
  			}
  
  			this.isPointInBox = function(x, y) {
  				return (this.x1 <= x && x <= this.x2 && this.y1 <= y && y <= this.y2);
  			}
  
  			this.addPoint(x1, y1);
  			this.addPoint(x2, y2);
  		}
  
  		// transforms
  		svg.Transform = function(v) {
  			var that = this;
  			this.Type = {}
  
  			// translate
  			this.Type.translate = function(s) {
  				this.p = svg.CreatePoint(s);
  				this.apply = function(ctx) {
  					ctx.translate(this.p.x || 0.0, this.p.y || 0.0);
  				}
  				this.unapply = function(ctx) {
  					ctx.translate(-1.0 * this.p.x || 0.0, -1.0 * this.p.y || 0.0);
  				}
  				this.applyToPoint = function(p) {
  					p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
  				}
  			}
  
  			// rotate
  			this.Type.rotate = function(s) {
  				var a = svg.ToNumberArray(s);
  				this.angle = new svg.Property('angle', a[0]);
  				this.cx = a[1] || 0;
  				this.cy = a[2] || 0;
  				this.apply = function(ctx) {
  					ctx.translate(this.cx, this.cy);
  					ctx.rotate(this.angle.toRadians());
  					ctx.translate(-this.cx, -this.cy);
  				}
  				this.unapply = function(ctx) {
  					ctx.translate(this.cx, this.cy);
  					ctx.rotate(-1.0 * this.angle.toRadians());
  					ctx.translate(-this.cx, -this.cy);
  				}
  				this.applyToPoint = function(p) {
  					var a = this.angle.toRadians();
  					p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
  					p.applyTransform([Math.cos(a), Math.sin(a), -Math.sin(a), Math.cos(a), 0, 0]);
  					p.applyTransform([1, 0, 0, 1, -this.p.x || 0.0, -this.p.y || 0.0]);
  				}
  			}
  
  			this.Type.scale = function(s) {
  				this.p = svg.CreatePoint(s);
  				this.apply = function(ctx) {
  					ctx.scale(this.p.x || 1.0, this.p.y || this.p.x || 1.0);
  				}
  				this.unapply = function(ctx) {
  					ctx.scale(1.0 / this.p.x || 1.0, 1.0 / this.p.y || this.p.x || 1.0);
  				}
  				this.applyToPoint = function(p) {
  					p.applyTransform([this.p.x || 0.0, 0, 0, this.p.y || 0.0, 0, 0]);
  				}
  			}
  
  			this.Type.matrix = function(s) {
  				this.m = svg.ToNumberArray(s);
  				this.apply = function(ctx) {
  					ctx.transform(this.m[0], this.m[1], this.m[2], this.m[3], this.m[4], this.m[5]);
  				}
  				this.unapply = function(ctx) {
  					var a = this.m[0];
  					var b = this.m[2];
  					var c = this.m[4];
  					var d = this.m[1];
  					var e = this.m[3];
  					var f = this.m[5];
  					var g = 0.0;
  					var h = 0.0;
  					var i = 1.0;
  					var det = 1 / (a*(e*i-f*h)-b*(d*i-f*g)+c*(d*h-e*g));
  					ctx.transform(
  						det*(e*i-f*h),
  						det*(f*g-d*i),
  						det*(c*h-b*i),
  						det*(a*i-c*g),
  						det*(b*f-c*e),
  						det*(c*d-a*f)
  					);
  				}
  				this.applyToPoint = function(p) {
  					p.applyTransform(this.m);
  				}
  			}
  
  			this.Type.SkewBase = function(s) {
  				this.base = that.Type.matrix;
  				this.base(s);
  				this.angle = new svg.Property('angle', s);
  			}
  			this.Type.SkewBase.prototype = new this.Type.matrix;
  
  			this.Type.skewX = function(s) {
  				this.base = that.Type.SkewBase;
  				this.base(s);
  				this.m = [1, 0, Math.tan(this.angle.toRadians()), 1, 0, 0];
  			}
  			this.Type.skewX.prototype = new this.Type.SkewBase;
  
  			this.Type.skewY = function(s) {
  				this.base = that.Type.SkewBase;
  				this.base(s);
  				this.m = [1, Math.tan(this.angle.toRadians()), 0, 1, 0, 0];
  			}
  			this.Type.skewY.prototype = new this.Type.SkewBase;
  
  			this.transforms = [];
  
  			this.apply = function(ctx) {
  				for (var i=0; i<this.transforms.length; i++) {
  					this.transforms[i].apply(ctx);
  				}
  			}
  
  			this.unapply = function(ctx) {
  				for (var i=this.transforms.length-1; i>=0; i--) {
  					this.transforms[i].unapply(ctx);
  				}
  			}
  
  			this.applyToPoint = function(p) {
  				for (var i=0; i<this.transforms.length; i++) {
  					this.transforms[i].applyToPoint(p);
  				}
  			}
  
  			var data = svg.trim(svg.compressSpaces(v)).replace(/\)([a-zA-Z])/g, ') $1').replace(/\)(\s?,\s?)/g,') ').split(/\s(?=[a-z])/);
  			for (var i=0; i<data.length; i++) {
  				var type = svg.trim(data[i].split('(')[0]);
  				var s = data[i].split('(')[1].replace(')','');
  				var transform = new this.Type[type](s);
  				transform.type = type;
  				this.transforms.push(transform);
  			}
  		}
  
  		// aspect ratio
  		svg.AspectRatio = function(ctx, aspectRatio, width, desiredWidth, height, desiredHeight, minX, minY, refX, refY) {
  			// aspect ratio - http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute
  			aspectRatio = svg.compressSpaces(aspectRatio);
  			aspectRatio = aspectRatio.replace(/^defer\s/,''); // ignore defer
  			var align = aspectRatio.split(' ')[0] || 'xMidYMid';
  			var meetOrSlice = aspectRatio.split(' ')[1] || 'meet';
  
  			// calculate scale
  			var scaleX = width / desiredWidth;
  			var scaleY = height / desiredHeight;
  			var scaleMin = Math.min(scaleX, scaleY);
  			var scaleMax = Math.max(scaleX, scaleY);
  			if (meetOrSlice == 'meet') { desiredWidth *= scaleMin; desiredHeight *= scaleMin; }
  			if (meetOrSlice == 'slice') { desiredWidth *= scaleMax; desiredHeight *= scaleMax; }
  
  			refX = new svg.Property('refX', refX);
  			refY = new svg.Property('refY', refY);
  			if (refX.hasValue() && refY.hasValue()) {
  				ctx.translate(-scaleMin * refX.toPixels('x'), -scaleMin * refY.toPixels('y'));
  			}
  			else {
  				// align
  				if (align.match(/^xMid/) && ((meetOrSlice == 'meet' && scaleMin == scaleY) || (meetOrSlice == 'slice' && scaleMax == scaleY))) ctx.translate(width / 2.0 - desiredWidth / 2.0, 0);
  				if (align.match(/YMid$/) && ((meetOrSlice == 'meet' && scaleMin == scaleX) || (meetOrSlice == 'slice' && scaleMax == scaleX))) ctx.translate(0, height / 2.0 - desiredHeight / 2.0);
  				if (align.match(/^xMax/) && ((meetOrSlice == 'meet' && scaleMin == scaleY) || (meetOrSlice == 'slice' && scaleMax == scaleY))) ctx.translate(width - desiredWidth, 0);
  				if (align.match(/YMax$/) && ((meetOrSlice == 'meet' && scaleMin == scaleX) || (meetOrSlice == 'slice' && scaleMax == scaleX))) ctx.translate(0, height - desiredHeight);
  			}
  
  			// scale
  			if (align == 'none') ctx.scale(scaleX, scaleY);
  			else if (meetOrSlice == 'meet') ctx.scale(scaleMin, scaleMin);
  			else if (meetOrSlice == 'slice') ctx.scale(scaleMax, scaleMax);
  
  			// translate
  			ctx.translate(minX == null ? 0 : -minX, minY == null ? 0 : -minY);
  		}
  
  		// elements
  		svg.Element = {}
  
  		svg.EmptyProperty = new svg.Property('EMPTY', '');
  
  		svg.Element.ElementBase = function(node) {
  			this.attributes = {};
  			this.styles = {};
  			this.stylesSpecificity = {};
  			this.children = [];
  
  			// get or create attribute
  			this.attribute = function(name, createIfNotExists) {
  				var a = this.attributes[name];
  				if (a != null) return a;
  
  				if (createIfNotExists == true) { a = new svg.Property(name, ''); this.attributes[name] = a; }
  				return a || svg.EmptyProperty;
  			}
  
  			this.getHrefAttribute = function() {
  				for (var a in this.attributes) {
  					if (a.match(/:href$/)) {
  						return this.attributes[a];
  					}
  				}
  				return svg.EmptyProperty;
  			}
  
  			// get or create style, crawls up node tree
  			this.style = function(name, createIfNotExists, skipAncestors) {
  				var s = this.styles[name];
  				if (s != null) return s;
  
  				var a = this.attribute(name);
  				if (a != null && a.hasValue()) {
  					this.styles[name] = a; // move up to me to cache
  					return a;
  				}
  
  				if (skipAncestors != true) {
  					var p = this.parent;
  					if (p != null) {
  						var ps = p.style(name);
  						if (ps != null && ps.hasValue()) {
  							return ps;
  						}
  					}
  				}
  
  				if (createIfNotExists == true) { s = new svg.Property(name, ''); this.styles[name] = s; }
  				return s || svg.EmptyProperty;
  			}
  
  			// base render
  			this.render = function(ctx) {
  				// don't render display=none
  				if (this.style('display').value == 'none') return;
  
  				// don't render visibility=hidden
  				if (this.style('visibility').value == 'hidden') return;
  
  				ctx.save();
  				if (this.attribute('mask').hasValue()) { // mask
  					var mask = this.attribute('mask').getDefinition();
  					if (mask != null) mask.apply(ctx, this);
  				}
  				else if (this.style('filter').hasValue()) { // filter
  					var filter = this.style('filter').getDefinition();
  					if (filter != null) filter.apply(ctx, this);
  				}
  				else {
  					this.setContext(ctx);
  					this.renderChildren(ctx);
  					this.clearContext(ctx);
  				}
  				ctx.restore();
  			}
  
  			// base set context
  			this.setContext = function(ctx) {
  				// OVERRIDE ME!
  			}
  
  			// base clear context
  			this.clearContext = function(ctx) {
  				// OVERRIDE ME!
  			}
  
  			// base render children
  			this.renderChildren = function(ctx) {
  				for (var i=0; i<this.children.length; i++) {
  					this.children[i].render(ctx);
  				}
  			}
  
  			this.addChild = function(childNode, create) {
  				var child = childNode;
  				if (create) child = svg.CreateElement(childNode);
  				child.parent = this;
  				if (child.type != 'title') { this.children.push(child);	}
  			}
  			
  			this.addStylesFromStyleDefinition = function () {
  				// add styles
  				for (var selector in svg.Styles) {
  					if (matchesSelector(node, selector)) {
  						var styles = svg.Styles[selector];
  						var specificity = svg.StylesSpecificity[selector];
  						if (styles != null) {
  							for (var name in styles) {
  								var existingSpecificity = this.stylesSpecificity[name];
  								if (typeof(existingSpecificity) == 'undefined') {
  									existingSpecificity = '000';
  								}
  								if (specificity > existingSpecificity) {
  									this.styles[name] = styles[name];
  									this.stylesSpecificity[name] = specificity;
  								}
  							}
  						}
  					}
  				}
  			};
  
  			if (node != null && node.nodeType == 1) { //ELEMENT_NODE
  				// add attributes
  				for (var i=0; i<node.attributes.length; i++) {
  					var attribute = node.attributes[i];
  					this.attributes[attribute.nodeName] = new svg.Property(attribute.nodeName, attribute.value);
  				}
  				
  				this.addStylesFromStyleDefinition();
  
  				// add inline styles
  				if (this.attribute('style').hasValue()) {
  					var styles = this.attribute('style').value.split(';');
  					for (var i=0; i<styles.length; i++) {
  						if (svg.trim(styles[i]) != '') {
  							var style = styles[i].split(':');
  							var name = svg.trim(style[0]);
  							var value = svg.trim(style[1]);
  							this.styles[name] = new svg.Property(name, value);
  						}
  					}
  				}
  
  				// add id
  				if (this.attribute('id').hasValue()) {
  					if (svg.Definitions[this.attribute('id').value] == null) {
  						svg.Definitions[this.attribute('id').value] = this;
  					}
  				}
  
  				// add children
  				for (var i=0; i<node.childNodes.length; i++) {
  					var childNode = node.childNodes[i];
  					if (childNode.nodeType == 1) this.addChild(childNode, true); //ELEMENT_NODE
  					if (this.captureTextNodes && (childNode.nodeType == 3 || childNode.nodeType == 4)) {
  						var text = childNode.value || childNode.text || childNode.textContent || '';
  						if (svg.compressSpaces(text) != '') {
  							this.addChild(new svg.Element.tspan(childNode), false); // TEXT_NODE
  						}
  					}
  				}
  			}
  		}
  
  		svg.Element.RenderedElementBase = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.setContext = function(ctx) {
  				// fill
  				if (this.style('fill').isUrlDefinition()) {
  					var fs = this.style('fill').getFillStyleDefinition(this, this.style('fill-opacity'));
  					if (fs != null) ctx.fillStyle = fs;
  				}
  				else if (this.style('fill').hasValue()) {
  					var fillStyle = this.style('fill');
  					if (fillStyle.value == 'currentColor') fillStyle.value = this.style('color').value;
  					if (fillStyle.value != 'inherit') ctx.fillStyle = (fillStyle.value == 'none' ? 'rgba(0,0,0,0)' : fillStyle.value);
  				}
  				if (this.style('fill-opacity').hasValue()) {
  					var fillStyle = new svg.Property('fill', ctx.fillStyle);
  					fillStyle = fillStyle.addOpacity(this.style('fill-opacity'));
  					ctx.fillStyle = fillStyle.value;
  				}
  
  				// stroke
  				if (this.style('stroke').isUrlDefinition()) {
  					var fs = this.style('stroke').getFillStyleDefinition(this, this.style('stroke-opacity'));
  					if (fs != null) ctx.strokeStyle = fs;
  				}
  				else if (this.style('stroke').hasValue()) {
  					var strokeStyle = this.style('stroke');
  					if (strokeStyle.value == 'currentColor') strokeStyle.value = this.style('color').value;
  					if (strokeStyle.value != 'inherit') ctx.strokeStyle = (strokeStyle.value == 'none' ? 'rgba(0,0,0,0)' : strokeStyle.value);
  				}
  				if (this.style('stroke-opacity').hasValue()) {
  					var strokeStyle = new svg.Property('stroke', ctx.strokeStyle);
  					strokeStyle = strokeStyle.addOpacity(this.style('stroke-opacity'));
  					ctx.strokeStyle = strokeStyle.value;
  				}
  				if (this.style('stroke-width').hasValue()) {
  					var newLineWidth = this.style('stroke-width').toPixels();
  					ctx.lineWidth = newLineWidth == 0 ? 0.001 : newLineWidth; // browsers don't respect 0
  			    }
  				if (this.style('stroke-linecap').hasValue()) ctx.lineCap = this.style('stroke-linecap').value;
  				if (this.style('stroke-linejoin').hasValue()) ctx.lineJoin = this.style('stroke-linejoin').value;
  				if (this.style('stroke-miterlimit').hasValue()) ctx.miterLimit = this.style('stroke-miterlimit').value;
  				if (this.style('stroke-dasharray').hasValue() && this.style('stroke-dasharray').value != 'none') {
  					var gaps = svg.ToNumberArray(this.style('stroke-dasharray').value);
  					if (typeof(ctx.setLineDash) != 'undefined') { ctx.setLineDash(gaps); }
  					else if (typeof(ctx.webkitLineDash) != 'undefined') { ctx.webkitLineDash = gaps; }
  					else if (typeof(ctx.mozDash) != 'undefined' && !(gaps.length==1 && gaps[0]==0)) { ctx.mozDash = gaps; }
  
  					var offset = this.style('stroke-dashoffset').numValueOrDefault(1);
  					if (typeof(ctx.lineDashOffset) != 'undefined') { ctx.lineDashOffset = offset; }
  					else if (typeof(ctx.webkitLineDashOffset) != 'undefined') { ctx.webkitLineDashOffset = offset; }
  					else if (typeof(ctx.mozDashOffset) != 'undefined') { ctx.mozDashOffset = offset; }
  				}
  
  				// font
  				if (typeof(ctx.font) != 'undefined') {
  					ctx.font = svg.Font.CreateFont(
  						this.style('font-style').value,
  						this.style('font-variant').value,
  						this.style('font-weight').value,
  						this.style('font-size').hasValue() ? this.style('font-size').toPixels() + 'px' : '',
  						this.style('font-family').value).toString();
  				}
  
  				// transform
  				if (this.attribute('transform').hasValue()) {
  					var transform = new svg.Transform(this.attribute('transform').value);
  					transform.apply(ctx);
  				}
  
  				// clip
  				if (this.attribute('clip-path', false, true).hasValue()) {
  					var clip = this.attribute('clip-path', false, true).getDefinition();
  					if (clip != null) clip.apply(ctx);
  				}
  
  				// opacity
  				if (this.style('opacity').hasValue()) {
  					ctx.globalAlpha = this.style('opacity').numValue();
  				}
  			}
  		}
  		svg.Element.RenderedElementBase.prototype = new svg.Element.ElementBase;
  
  		svg.Element.PathElementBase = function(node) {
  			this.base = svg.Element.RenderedElementBase;
  			this.base(node);
  
  			this.path = function(ctx) {
  				if (ctx != null) ctx.beginPath();
  				return new svg.BoundingBox();
  			}
  
  			this.renderChildren = function(ctx) {
  				this.path(ctx);
  				svg.Mouse.checkPath(this, ctx);
  				if (ctx.fillStyle != '') {
  					if (this.style('fill-rule').valueOrDefault('inherit') != 'inherit') { ctx.fill(this.style('fill-rule').value); }
  					else { ctx.fill(); }
  				}
  				if (ctx.strokeStyle != '') ctx.stroke();
  
  				var markers = this.getMarkers();
  				if (markers != null) {
  					if (this.style('marker-start').isUrlDefinition()) {
  						var marker = this.style('marker-start').getDefinition();
  						marker.render(ctx, markers[0][0], markers[0][1]);
  					}
  					if (this.style('marker-mid').isUrlDefinition()) {
  						var marker = this.style('marker-mid').getDefinition();
  						for (var i=1;i<markers.length-1;i++) {
  							marker.render(ctx, markers[i][0], markers[i][1]);
  						}
  					}
  					if (this.style('marker-end').isUrlDefinition()) {
  						var marker = this.style('marker-end').getDefinition();
  						marker.render(ctx, markers[markers.length-1][0], markers[markers.length-1][1]);
  					}
  				}
  			}
  
  			this.getBoundingBox = function() {
  				return this.path();
  			}
  
  			this.getMarkers = function() {
  				return null;
  			}
  		}
  		svg.Element.PathElementBase.prototype = new svg.Element.RenderedElementBase;
  
  		// svg element
  		svg.Element.svg = function(node) {
  			this.base = svg.Element.RenderedElementBase;
  			this.base(node);
  
  			this.baseClearContext = this.clearContext;
  			this.clearContext = function(ctx) {
  				this.baseClearContext(ctx);
  				svg.ViewPort.RemoveCurrent();
  			}
  
  			this.baseSetContext = this.setContext;
  			this.setContext = function(ctx) {
  				// initial values and defaults
  				ctx.strokeStyle = 'rgba(0,0,0,0)';
  				ctx.lineCap = 'butt';
  				ctx.lineJoin = 'miter';
  				ctx.miterLimit = 4;
  				if (typeof(ctx.font) != 'undefined' && typeof(window.getComputedStyle) != 'undefined') {
  					ctx.font = window.getComputedStyle(ctx.canvas).getPropertyValue('font');
  				}
  
  				this.baseSetContext(ctx);
  
  				// create new view port
  				if (!this.attribute('x').hasValue()) this.attribute('x', true).value = 0;
  				if (!this.attribute('y').hasValue()) this.attribute('y', true).value = 0;
  				ctx.translate(this.attribute('x').toPixels('x'), this.attribute('y').toPixels('y'));
  
  				var width = svg.ViewPort.width();
  				var height = svg.ViewPort.height();
  
  				if (!this.attribute('width').hasValue()) this.attribute('width', true).value = '100%';
  				if (!this.attribute('height').hasValue()) this.attribute('height', true).value = '100%';
  				if (typeof(this.root) == 'undefined') {
  					width = this.attribute('width').toPixels('x');
  					height = this.attribute('height').toPixels('y');
  
  					var x = 0;
  					var y = 0;
  					if (this.attribute('refX').hasValue() && this.attribute('refY').hasValue()) {
  						x = -this.attribute('refX').toPixels('x');
  						y = -this.attribute('refY').toPixels('y');
  					}
  
  					if (this.attribute('overflow').valueOrDefault('hidden') != 'visible') {
  						ctx.beginPath();
  						ctx.moveTo(x, y);
  						ctx.lineTo(width, y);
  						ctx.lineTo(width, height);
  						ctx.lineTo(x, height);
  						ctx.closePath();
  						ctx.clip();
  					}
  				}
  				svg.ViewPort.SetCurrent(width, height);
  
  				// viewbox
  				if (this.attribute('viewBox').hasValue()) {
  					var viewBox = svg.ToNumberArray(this.attribute('viewBox').value);
  					var minX = viewBox[0];
  					var minY = viewBox[1];
  					width = viewBox[2];
  					height = viewBox[3];
  
  					svg.AspectRatio(ctx,
  									this.attribute('preserveAspectRatio').value,
  									svg.ViewPort.width(),
  									width,
  									svg.ViewPort.height(),
  									height,
  									minX,
  									minY,
  									this.attribute('refX').value,
  									this.attribute('refY').value);
  
  					svg.ViewPort.RemoveCurrent();
  					svg.ViewPort.SetCurrent(viewBox[2], viewBox[3]);
  				}
  			}
  		}
  		svg.Element.svg.prototype = new svg.Element.RenderedElementBase;
  
  		// rect element
  		svg.Element.rect = function(node) {
  			this.base = svg.Element.PathElementBase;
  			this.base(node);
  
  			this.path = function(ctx) {
  				var x = this.attribute('x').toPixels('x');
  				var y = this.attribute('y').toPixels('y');
  				var width = this.attribute('width').toPixels('x');
  				var height = this.attribute('height').toPixels('y');
  				var rx = this.attribute('rx').toPixels('x');
  				var ry = this.attribute('ry').toPixels('y');
  				if (this.attribute('rx').hasValue() && !this.attribute('ry').hasValue()) ry = rx;
  				if (this.attribute('ry').hasValue() && !this.attribute('rx').hasValue()) rx = ry;
  				rx = Math.min(rx, width / 2.0);
  				ry = Math.min(ry, height / 2.0);
  				if (ctx != null) {
  					ctx.beginPath();
  					ctx.moveTo(x + rx, y);
  					ctx.lineTo(x + width - rx, y);
  					ctx.quadraticCurveTo(x + width, y, x + width, y + ry)
  					ctx.lineTo(x + width, y + height - ry);
  					ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height)
  					ctx.lineTo(x + rx, y + height);
  					ctx.quadraticCurveTo(x, y + height, x, y + height - ry)
  					ctx.lineTo(x, y + ry);
  					ctx.quadraticCurveTo(x, y, x + rx, y)
  					ctx.closePath();
  				}
  
  				return new svg.BoundingBox(x, y, x + width, y + height);
  			}
  		}
  		svg.Element.rect.prototype = new svg.Element.PathElementBase;
  
  		// circle element
  		svg.Element.circle = function(node) {
  			this.base = svg.Element.PathElementBase;
  			this.base(node);
  
  			this.path = function(ctx) {
  				var cx = this.attribute('cx').toPixels('x');
  				var cy = this.attribute('cy').toPixels('y');
  				var r = this.attribute('r').toPixels();
  
  				if (ctx != null) {
  					ctx.beginPath();
  					ctx.arc(cx, cy, r, 0, Math.PI * 2, true);
  					ctx.closePath();
  				}
  
  				return new svg.BoundingBox(cx - r, cy - r, cx + r, cy + r);
  			}
  		}
  		svg.Element.circle.prototype = new svg.Element.PathElementBase;
  
  		// ellipse element
  		svg.Element.ellipse = function(node) {
  			this.base = svg.Element.PathElementBase;
  			this.base(node);
  
  			this.path = function(ctx) {
  				var KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
  				var rx = this.attribute('rx').toPixels('x');
  				var ry = this.attribute('ry').toPixels('y');
  				var cx = this.attribute('cx').toPixels('x');
  				var cy = this.attribute('cy').toPixels('y');
  
  				if (ctx != null) {
  					ctx.beginPath();
  					ctx.moveTo(cx, cy - ry);
  					ctx.bezierCurveTo(cx + (KAPPA * rx), cy - ry,  cx + rx, cy - (KAPPA * ry), cx + rx, cy);
  					ctx.bezierCurveTo(cx + rx, cy + (KAPPA * ry), cx + (KAPPA * rx), cy + ry, cx, cy + ry);
  					ctx.bezierCurveTo(cx - (KAPPA * rx), cy + ry, cx - rx, cy + (KAPPA * ry), cx - rx, cy);
  					ctx.bezierCurveTo(cx - rx, cy - (KAPPA * ry), cx - (KAPPA * rx), cy - ry, cx, cy - ry);
  					ctx.closePath();
  				}
  
  				return new svg.BoundingBox(cx - rx, cy - ry, cx + rx, cy + ry);
  			}
  		}
  		svg.Element.ellipse.prototype = new svg.Element.PathElementBase;
  
  		// line element
  		svg.Element.line = function(node) {
  			this.base = svg.Element.PathElementBase;
  			this.base(node);
  
  			this.getPoints = function() {
  				return [
  					new svg.Point(this.attribute('x1').toPixels('x'), this.attribute('y1').toPixels('y')),
  					new svg.Point(this.attribute('x2').toPixels('x'), this.attribute('y2').toPixels('y'))];
  			}
  
  			this.path = function(ctx) {
  				var points = this.getPoints();
  
  				if (ctx != null) {
  					ctx.beginPath();
  					ctx.moveTo(points[0].x, points[0].y);
  					ctx.lineTo(points[1].x, points[1].y);
  				}
  
  				return new svg.BoundingBox(points[0].x, points[0].y, points[1].x, points[1].y);
  			}
  
  			this.getMarkers = function() {
  				var points = this.getPoints();
  				var a = points[0].angleTo(points[1]);
  				return [[points[0], a], [points[1], a]];
  			}
  		}
  		svg.Element.line.prototype = new svg.Element.PathElementBase;
  
  		// polyline element
  		svg.Element.polyline = function(node) {
  			this.base = svg.Element.PathElementBase;
  			this.base(node);
  
  			this.points = svg.CreatePath(this.attribute('points').value);
  			this.path = function(ctx) {
  				var bb = new svg.BoundingBox(this.points[0].x, this.points[0].y);
  				if (ctx != null) {
  					ctx.beginPath();
  					ctx.moveTo(this.points[0].x, this.points[0].y);
  				}
  				for (var i=1; i<this.points.length; i++) {
  					bb.addPoint(this.points[i].x, this.points[i].y);
  					if (ctx != null) ctx.lineTo(this.points[i].x, this.points[i].y);
  				}
  				return bb;
  			}
  
  			this.getMarkers = function() {
  				var markers = [];
  				for (var i=0; i<this.points.length - 1; i++) {
  					markers.push([this.points[i], this.points[i].angleTo(this.points[i+1])]);
  				}
  				markers.push([this.points[this.points.length-1], markers[markers.length-1][1]]);
  				return markers;
  			}
  		}
  		svg.Element.polyline.prototype = new svg.Element.PathElementBase;
  
  		// polygon element
  		svg.Element.polygon = function(node) {
  			this.base = svg.Element.polyline;
  			this.base(node);
  
  			this.basePath = this.path;
  			this.path = function(ctx) {
  				var bb = this.basePath(ctx);
  				if (ctx != null) {
  					ctx.lineTo(this.points[0].x, this.points[0].y);
  					ctx.closePath();
  				}
  				return bb;
  			}
  		}
  		svg.Element.polygon.prototype = new svg.Element.polyline;
  
  		// path element
  		svg.Element.path = function(node) {
  			this.base = svg.Element.PathElementBase;
  			this.base(node);
  
  			var d = this.attribute('d').value;
  			// TODO: convert to real lexer based on http://www.w3.org/TR/SVG11/paths.html#PathDataBNF
  			d = d.replace(/,/gm,' '); // get rid of all commas
  			// As the end of a match can also be the start of the next match, we need to run this replace twice.
  			for(var i=0; i<2; i++)
  				d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([^\s])/gm,'$1 $2'); // suffix commands with spaces
  			d = d.replace(/([^\s])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // prefix commands with spaces
  			d = d.replace(/([0-9])([+\-])/gm,'$1 $2'); // separate digits on +- signs
  			// Again, we need to run this twice to find all occurances
  			for(var i=0; i<2; i++)
  				d = d.replace(/(\.[0-9]*)(\.)/gm,'$1 $2'); // separate digits when they start with a comma
  			d = d.replace(/([Aa](\s+[0-9]+){3})\s+([01])\s*([01])/gm,'$1 $3 $4 '); // shorthand elliptical arc path syntax
  			d = svg.compressSpaces(d); // compress multiple spaces
  			d = svg.trim(d);
  			this.PathParser = new (function(d) {
  				this.tokens = d.split(' ');
  
  				this.reset = function() {
  					this.i = -1;
  					this.command = '';
  					this.previousCommand = '';
  					this.start = new svg.Point(0, 0);
  					this.control = new svg.Point(0, 0);
  					this.current = new svg.Point(0, 0);
  					this.points = [];
  					this.angles = [];
  				}
  
  				this.isEnd = function() {
  					return this.i >= this.tokens.length - 1;
  				}
  
  				this.isCommandOrEnd = function() {
  					if (this.isEnd()) return true;
  					return this.tokens[this.i + 1].match(/^[A-Za-z]$/) != null;
  				}
  
  				this.isRelativeCommand = function() {
  					switch(this.command)
  					{
  						case 'm':
  						case 'l':
  						case 'h':
  						case 'v':
  						case 'c':
  						case 's':
  						case 'q':
  						case 't':
  						case 'a':
  						case 'z':
  							return true;
  							break;
  					}
  					return false;
  				}
  
  				this.getToken = function() {
  					this.i++;
  					return this.tokens[this.i];
  				}
  
  				this.getScalar = function() {
  					return parseFloat(this.getToken());
  				}
  
  				this.nextCommand = function() {
  					this.previousCommand = this.command;
  					this.command = this.getToken();
  				}
  
  				this.getPoint = function() {
  					var p = new svg.Point(this.getScalar(), this.getScalar());
  					return this.makeAbsolute(p);
  				}
  
  				this.getAsControlPoint = function() {
  					var p = this.getPoint();
  					this.control = p;
  					return p;
  				}
  
  				this.getAsCurrentPoint = function() {
  					var p = this.getPoint();
  					this.current = p;
  					return p;
  				}
  
  				this.getReflectedControlPoint = function() {
  					if (this.previousCommand.toLowerCase() != 'c' &&
  					    this.previousCommand.toLowerCase() != 's' &&
  						this.previousCommand.toLowerCase() != 'q' &&
  						this.previousCommand.toLowerCase() != 't' ){
  						return this.current;
  					}
  
  					// reflect point
  					var p = new svg.Point(2 * this.current.x - this.control.x, 2 * this.current.y - this.control.y);
  					return p;
  				}
  
  				this.makeAbsolute = function(p) {
  					if (this.isRelativeCommand()) {
  						p.x += this.current.x;
  						p.y += this.current.y;
  					}
  					return p;
  				}
  
  				this.addMarker = function(p, from, priorTo) {
  					// if the last angle isn't filled in because we didn't have this point yet ...
  					if (priorTo != null && this.angles.length > 0 && this.angles[this.angles.length-1] == null) {
  						this.angles[this.angles.length-1] = this.points[this.points.length-1].angleTo(priorTo);
  					}
  					this.addMarkerAngle(p, from == null ? null : from.angleTo(p));
  				}
  
  				this.addMarkerAngle = function(p, a) {
  					this.points.push(p);
  					this.angles.push(a);
  				}
  
  				this.getMarkerPoints = function() { return this.points; }
  				this.getMarkerAngles = function() {
  					for (var i=0; i<this.angles.length; i++) {
  						if (this.angles[i] == null) {
  							for (var j=i+1; j<this.angles.length; j++) {
  								if (this.angles[j] != null) {
  									this.angles[i] = this.angles[j];
  									break;
  								}
  							}
  						}
  					}
  					return this.angles;
  				}
  			})(d);
  
  			this.path = function(ctx) {
  				var pp = this.PathParser;
  				pp.reset();
  
  				var bb = new svg.BoundingBox();
  				if (ctx != null) ctx.beginPath();
  				while (!pp.isEnd()) {
  					pp.nextCommand();
  					switch (pp.command) {
  					case 'M':
  					case 'm':
  						var p = pp.getAsCurrentPoint();
  						pp.addMarker(p);
  						bb.addPoint(p.x, p.y);
  						if (ctx != null) ctx.moveTo(p.x, p.y);
  						pp.start = pp.current;
  						while (!pp.isCommandOrEnd()) {
  							var p = pp.getAsCurrentPoint();
  							pp.addMarker(p, pp.start);
  							bb.addPoint(p.x, p.y);
  							if (ctx != null) ctx.lineTo(p.x, p.y);
  						}
  						break;
  					case 'L':
  					case 'l':
  						while (!pp.isCommandOrEnd()) {
  							var c = pp.current;
  							var p = pp.getAsCurrentPoint();
  							pp.addMarker(p, c);
  							bb.addPoint(p.x, p.y);
  							if (ctx != null) ctx.lineTo(p.x, p.y);
  						}
  						break;
  					case 'H':
  					case 'h':
  						while (!pp.isCommandOrEnd()) {
  							var newP = new svg.Point((pp.isRelativeCommand() ? pp.current.x : 0) + pp.getScalar(), pp.current.y);
  							pp.addMarker(newP, pp.current);
  							pp.current = newP;
  							bb.addPoint(pp.current.x, pp.current.y);
  							if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
  						}
  						break;
  					case 'V':
  					case 'v':
  						while (!pp.isCommandOrEnd()) {
  							var newP = new svg.Point(pp.current.x, (pp.isRelativeCommand() ? pp.current.y : 0) + pp.getScalar());
  							pp.addMarker(newP, pp.current);
  							pp.current = newP;
  							bb.addPoint(pp.current.x, pp.current.y);
  							if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
  						}
  						break;
  					case 'C':
  					case 'c':
  						while (!pp.isCommandOrEnd()) {
  							var curr = pp.current;
  							var p1 = pp.getPoint();
  							var cntrl = pp.getAsControlPoint();
  							var cp = pp.getAsCurrentPoint();
  							pp.addMarker(cp, cntrl, p1);
  							bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
  							if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
  						}
  						break;
  					case 'S':
  					case 's':
  						while (!pp.isCommandOrEnd()) {
  							var curr = pp.current;
  							var p1 = pp.getReflectedControlPoint();
  							var cntrl = pp.getAsControlPoint();
  							var cp = pp.getAsCurrentPoint();
  							pp.addMarker(cp, cntrl, p1);
  							bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
  							if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
  						}
  						break;
  					case 'Q':
  					case 'q':
  						while (!pp.isCommandOrEnd()) {
  							var curr = pp.current;
  							var cntrl = pp.getAsControlPoint();
  							var cp = pp.getAsCurrentPoint();
  							pp.addMarker(cp, cntrl, cntrl);
  							bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
  							if (ctx != null) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
  						}
  						break;
  					case 'T':
  					case 't':
  						while (!pp.isCommandOrEnd()) {
  							var curr = pp.current;
  							var cntrl = pp.getReflectedControlPoint();
  							pp.control = cntrl;
  							var cp = pp.getAsCurrentPoint();
  							pp.addMarker(cp, cntrl, cntrl);
  							bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
  							if (ctx != null) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
  						}
  						break;
  					case 'A':
  					case 'a':
  						while (!pp.isCommandOrEnd()) {
  						    var curr = pp.current;
  							var rx = pp.getScalar();
  							var ry = pp.getScalar();
  							var xAxisRotation = pp.getScalar() * (Math.PI / 180.0);
  							var largeArcFlag = pp.getScalar();
  							var sweepFlag = pp.getScalar();
  							var cp = pp.getAsCurrentPoint();
  
  							// Conversion from endpoint to center parameterization
  							// http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
  							// x1', y1'
  							var currp = new svg.Point(
  								Math.cos(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.sin(xAxisRotation) * (curr.y - cp.y) / 2.0,
  								-Math.sin(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.cos(xAxisRotation) * (curr.y - cp.y) / 2.0
  							);
  							// adjust radii
  							var l = Math.pow(currp.x,2)/Math.pow(rx,2)+Math.pow(currp.y,2)/Math.pow(ry,2);
  							if (l > 1) {
  								rx *= Math.sqrt(l);
  								ry *= Math.sqrt(l);
  							}
  							// cx', cy'
  							var s = (largeArcFlag == sweepFlag ? -1 : 1) * Math.sqrt(
  								((Math.pow(rx,2)*Math.pow(ry,2))-(Math.pow(rx,2)*Math.pow(currp.y,2))-(Math.pow(ry,2)*Math.pow(currp.x,2))) /
  								(Math.pow(rx,2)*Math.pow(currp.y,2)+Math.pow(ry,2)*Math.pow(currp.x,2))
  							);
  							if (isNaN(s)) s = 0;
  							var cpp = new svg.Point(s * rx * currp.y / ry, s * -ry * currp.x / rx);
  							// cx, cy
  							var centp = new svg.Point(
  								(curr.x + cp.x) / 2.0 + Math.cos(xAxisRotation) * cpp.x - Math.sin(xAxisRotation) * cpp.y,
  								(curr.y + cp.y) / 2.0 + Math.sin(xAxisRotation) * cpp.x + Math.cos(xAxisRotation) * cpp.y
  							);
  							// vector magnitude
  							var m = function(v) { return Math.sqrt(Math.pow(v[0],2) + Math.pow(v[1],2)); }
  							// ratio between two vectors
  							var r = function(u, v) { return (u[0]*v[0]+u[1]*v[1]) / (m(u)*m(v)) }
  							// angle between two vectors
  							var a = function(u, v) { return (u[0]*v[1] < u[1]*v[0] ? -1 : 1) * Math.acos(r(u,v)); }
  							// initial angle
  							var a1 = a([1,0], [(currp.x-cpp.x)/rx,(currp.y-cpp.y)/ry]);
  							// angle delta
  							var u = [(currp.x-cpp.x)/rx,(currp.y-cpp.y)/ry];
  							var v = [(-currp.x-cpp.x)/rx,(-currp.y-cpp.y)/ry];
  							var ad = a(u, v);
  							if (r(u,v) <= -1) ad = Math.PI;
  							if (r(u,v) >= 1) ad = 0;
  
  							// for markers
  							var dir = 1 - sweepFlag ? 1.0 : -1.0;
  							var ah = a1 + dir * (ad / 2.0);
  							var halfWay = new svg.Point(
  								centp.x + rx * Math.cos(ah),
  								centp.y + ry * Math.sin(ah)
  							);
  							pp.addMarkerAngle(halfWay, ah - dir * Math.PI / 2);
  							pp.addMarkerAngle(cp, ah - dir * Math.PI);
  
  							bb.addPoint(cp.x, cp.y); // TODO: this is too naive, make it better
  							if (ctx != null) {
  								var r = rx > ry ? rx : ry;
  								var sx = rx > ry ? 1 : rx / ry;
  								var sy = rx > ry ? ry / rx : 1;
  
  								ctx.translate(centp.x, centp.y);
  								ctx.rotate(xAxisRotation);
  								ctx.scale(sx, sy);
  								ctx.arc(0, 0, r, a1, a1 + ad, 1 - sweepFlag);
  								ctx.scale(1/sx, 1/sy);
  								ctx.rotate(-xAxisRotation);
  								ctx.translate(-centp.x, -centp.y);
  							}
  						}
  						break;
  					case 'Z':
  					case 'z':
  						if (ctx != null) ctx.closePath();
  						pp.current = pp.start;
  					}
  				}
  
  				return bb;
  			}
  
  			this.getMarkers = function() {
  				var points = this.PathParser.getMarkerPoints();
  				var angles = this.PathParser.getMarkerAngles();
  
  				var markers = [];
  				for (var i=0; i<points.length; i++) {
  					markers.push([points[i], angles[i]]);
  				}
  				return markers;
  			}
  		}
  		svg.Element.path.prototype = new svg.Element.PathElementBase;
  
  		// pattern element
  		svg.Element.pattern = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.createPattern = function(ctx, element) {
  				var width = this.attribute('width').toPixels('x', true);
  				var height = this.attribute('height').toPixels('y', true);
  
  				// render me using a temporary svg element
  				var tempSvg = new svg.Element.svg();
  				tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
  				tempSvg.attributes['width'] = new svg.Property('width', width + 'px');
  				tempSvg.attributes['height'] = new svg.Property('height', height + 'px');
  				tempSvg.attributes['transform'] = new svg.Property('transform', this.attribute('patternTransform').value);
  				tempSvg.children = this.children;
  
  				var c = document.createElement('canvas');
  				c.width = width;
  				c.height = height;
  				var cctx = c.getContext('2d');
  				if (this.attribute('x').hasValue() && this.attribute('y').hasValue()) {
  					cctx.translate(this.attribute('x').toPixels('x', true), this.attribute('y').toPixels('y', true));
  				}
  				// render 3x3 grid so when we transform there's no white space on edges
  				for (var x=-1; x<=1; x++) {
  					for (var y=-1; y<=1; y++) {
  						cctx.save();
  						cctx.translate(x * c.width, y * c.height);
  						tempSvg.render(cctx);
  						cctx.restore();
  					}
  				}
  				var pattern = ctx.createPattern(c, 'repeat');
  				return pattern;
  			}
  		}
  		svg.Element.pattern.prototype = new svg.Element.ElementBase;
  
  		// marker element
  		svg.Element.marker = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.baseRender = this.render;
  			this.render = function(ctx, point, angle) {
  				ctx.translate(point.x, point.y);
  				if (this.attribute('orient').valueOrDefault('auto') == 'auto') ctx.rotate(angle);
  				if (this.attribute('markerUnits').valueOrDefault('strokeWidth') == 'strokeWidth') ctx.scale(ctx.lineWidth, ctx.lineWidth);
  				ctx.save();
  
  				// render me using a temporary svg element
  				var tempSvg = new svg.Element.svg();
  				tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
  				tempSvg.attributes['refX'] = new svg.Property('refX', this.attribute('refX').value);
  				tempSvg.attributes['refY'] = new svg.Property('refY', this.attribute('refY').value);
  				tempSvg.attributes['width'] = new svg.Property('width', this.attribute('markerWidth').value);
  				tempSvg.attributes['height'] = new svg.Property('height', this.attribute('markerHeight').value);
  				tempSvg.attributes['fill'] = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
  				tempSvg.attributes['stroke'] = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
  				tempSvg.children = this.children;
  				tempSvg.render(ctx);
  
  				ctx.restore();
  				if (this.attribute('markerUnits').valueOrDefault('strokeWidth') == 'strokeWidth') ctx.scale(1/ctx.lineWidth, 1/ctx.lineWidth);
  				if (this.attribute('orient').valueOrDefault('auto') == 'auto') ctx.rotate(-angle);
  				ctx.translate(-point.x, -point.y);
  			}
  		}
  		svg.Element.marker.prototype = new svg.Element.ElementBase;
  
  		// definitions element
  		svg.Element.defs = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.render = function(ctx) {
  				// NOOP
  			}
  		}
  		svg.Element.defs.prototype = new svg.Element.ElementBase;
  
  		// base for gradients
  		svg.Element.GradientBase = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.gradientUnits = this.attribute('gradientUnits').valueOrDefault('objectBoundingBox');
  
  			this.stops = [];
  			for (var i=0; i<this.children.length; i++) {
  				var child = this.children[i];
  				if (child.type == 'stop') this.stops.push(child);
  			}
  
  			this.getGradient = function() {
  				// OVERRIDE ME!
  			}
  
  			this.createGradient = function(ctx, element, parentOpacityProp) {
  				var stopsContainer = this;
  				if (this.getHrefAttribute().hasValue()) {
  					stopsContainer = this.getHrefAttribute().getDefinition();
  				}
  
  				var addParentOpacity = function (color) {
  					if (parentOpacityProp.hasValue()) {
  						var p = new svg.Property('color', color);
  						return p.addOpacity(parentOpacityProp).value;
  					}
  					return color;
  				};
  
  				var g = this.getGradient(ctx, element);
  				if (g == null) return addParentOpacity(stopsContainer.stops[stopsContainer.stops.length - 1].color);
  				for (var i=0; i<stopsContainer.stops.length; i++) {
  					g.addColorStop(stopsContainer.stops[i].offset, addParentOpacity(stopsContainer.stops[i].color));
  				}
  
  				if (this.attribute('gradientTransform').hasValue()) {
  					// render as transformed pattern on temporary canvas
  					var rootView = svg.ViewPort.viewPorts[0];
  
  					var rect = new svg.Element.rect();
  					rect.attributes['x'] = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS/3.0);
  					rect.attributes['y'] = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS/3.0);
  					rect.attributes['width'] = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
  					rect.attributes['height'] = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
  
  					var group = new svg.Element.g();
  					group.attributes['transform'] = new svg.Property('transform', this.attribute('gradientTransform').value);
  					group.children = [ rect ];
  
  					var tempSvg = new svg.Element.svg();
  					tempSvg.attributes['x'] = new svg.Property('x', 0);
  					tempSvg.attributes['y'] = new svg.Property('y', 0);
  					tempSvg.attributes['width'] = new svg.Property('width', rootView.width);
  					tempSvg.attributes['height'] = new svg.Property('height', rootView.height);
  					tempSvg.children = [ group ];
  
  					var c = document.createElement('canvas');
  					c.width = rootView.width;
  					c.height = rootView.height;
  					var tempCtx = c.getContext('2d');
  					tempCtx.fillStyle = g;
  					tempSvg.render(tempCtx);
  					return tempCtx.createPattern(c, 'no-repeat');
  				}
  
  				return g;
  			}
  		}
  		svg.Element.GradientBase.prototype = new svg.Element.ElementBase;
  
  		// linear gradient element
  		svg.Element.linearGradient = function(node) {
  			this.base = svg.Element.GradientBase;
  			this.base(node);
  
  			this.getGradient = function(ctx, element) {
  				var bb = this.gradientUnits == 'objectBoundingBox' ? element.getBoundingBox() : null;
  
  				if (!this.attribute('x1').hasValue()
  				 && !this.attribute('y1').hasValue()
  				 && !this.attribute('x2').hasValue()
  				 && !this.attribute('y2').hasValue()) {
  					this.attribute('x1', true).value = 0;
  					this.attribute('y1', true).value = 0;
  					this.attribute('x2', true).value = 1;
  					this.attribute('y2', true).value = 0;
  				 }
  
  				var x1 = (this.gradientUnits == 'objectBoundingBox'
  					? bb.x() + bb.width() * this.attribute('x1').numValue()
  					: this.attribute('x1').toPixels('x'));
  				var y1 = (this.gradientUnits == 'objectBoundingBox'
  					? bb.y() + bb.height() * this.attribute('y1').numValue()
  					: this.attribute('y1').toPixels('y'));
  				var x2 = (this.gradientUnits == 'objectBoundingBox'
  					? bb.x() + bb.width() * this.attribute('x2').numValue()
  					: this.attribute('x2').toPixels('x'));
  				var y2 = (this.gradientUnits == 'objectBoundingBox'
  					? bb.y() + bb.height() * this.attribute('y2').numValue()
  					: this.attribute('y2').toPixels('y'));
  
  				if (x1 == x2 && y1 == y2) return null;
  				return ctx.createLinearGradient(x1, y1, x2, y2);
  			}
  		}
  		svg.Element.linearGradient.prototype = new svg.Element.GradientBase;
  
  		// radial gradient element
  		svg.Element.radialGradient = function(node) {
  			this.base = svg.Element.GradientBase;
  			this.base(node);
  
  			this.getGradient = function(ctx, element) {
  				var bb = element.getBoundingBox();
  
  				if (!this.attribute('cx').hasValue()) this.attribute('cx', true).value = '50%';
  				if (!this.attribute('cy').hasValue()) this.attribute('cy', true).value = '50%';
  				if (!this.attribute('r').hasValue()) this.attribute('r', true).value = '50%';
  
  				var cx = (this.gradientUnits == 'objectBoundingBox'
  					? bb.x() + bb.width() * this.attribute('cx').numValue()
  					: this.attribute('cx').toPixels('x'));
  				var cy = (this.gradientUnits == 'objectBoundingBox'
  					? bb.y() + bb.height() * this.attribute('cy').numValue()
  					: this.attribute('cy').toPixels('y'));
  
  				var fx = cx;
  				var fy = cy;
  				if (this.attribute('fx').hasValue()) {
  					fx = (this.gradientUnits == 'objectBoundingBox'
  					? bb.x() + bb.width() * this.attribute('fx').numValue()
  					: this.attribute('fx').toPixels('x'));
  				}
  				if (this.attribute('fy').hasValue()) {
  					fy = (this.gradientUnits == 'objectBoundingBox'
  					? bb.y() + bb.height() * this.attribute('fy').numValue()
  					: this.attribute('fy').toPixels('y'));
  				}
  
  				var r = (this.gradientUnits == 'objectBoundingBox'
  					? (bb.width() + bb.height()) / 2.0 * this.attribute('r').numValue()
  					: this.attribute('r').toPixels());
  
  				return ctx.createRadialGradient(fx, fy, 0, cx, cy, r);
  			}
  		}
  		svg.Element.radialGradient.prototype = new svg.Element.GradientBase;
  
  		// gradient stop element
  		svg.Element.stop = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.offset = this.attribute('offset').numValue();
  			if (this.offset < 0) this.offset = 0;
  			if (this.offset > 1) this.offset = 1;
  
  			var stopColor = this.style('stop-color', true);
  			if (stopColor.value === '') stopColor.value = '#000';
  			if (this.style('stop-opacity').hasValue()) stopColor = stopColor.addOpacity(this.style('stop-opacity'));
  			this.color = stopColor.value;
  		}
  		svg.Element.stop.prototype = new svg.Element.ElementBase;
  
  		// animation base element
  		svg.Element.AnimateBase = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			svg.Animations.push(this);
  
  			this.duration = 0.0;
  			this.begin = this.attribute('begin').toMilliseconds();
  			this.maxDuration = this.begin + this.attribute('dur').toMilliseconds();
  
  			this.getProperty = function() {
  				var attributeType = this.attribute('attributeType').value;
  				var attributeName = this.attribute('attributeName').value;
  
  				if (attributeType == 'CSS') {
  					return this.parent.style(attributeName, true);
  				}
  				return this.parent.attribute(attributeName, true);
  			};
  
  			this.initialValue = null;
  			this.initialUnits = '';
  			this.removed = false;
  
  			this.calcValue = function() {
  				// OVERRIDE ME!
  				return '';
  			}
  
  			this.update = function(delta) {
  				// set initial value
  				if (this.initialValue == null) {
  					this.initialValue = this.getProperty().value;
  					this.initialUnits = this.getProperty().getUnits();
  				}
  
  				// if we're past the end time
  				if (this.duration > this.maxDuration) {
  					// loop for indefinitely repeating animations
  					if (this.attribute('repeatCount').value == 'indefinite'
  					 || this.attribute('repeatDur').value == 'indefinite') {
  						this.duration = 0.0
  					}
  					else if (this.attribute('fill').valueOrDefault('remove') == 'freeze' && !this.frozen) {
  						this.frozen = true;
  						this.parent.animationFrozen = true;
  						this.parent.animationFrozenValue = this.getProperty().value;
  					}
  					else if (this.attribute('fill').valueOrDefault('remove') == 'remove' && !this.removed) {
  						this.removed = true;
  						this.getProperty().value = this.parent.animationFrozen ? this.parent.animationFrozenValue : this.initialValue;
  						return true;
  					}
  					return false;
  				}
  				this.duration = this.duration + delta;
  
  				// if we're past the begin time
  				var updated = false;
  				if (this.begin < this.duration) {
  					var newValue = this.calcValue(); // tween
  
  					if (this.attribute('type').hasValue()) {
  						// for transform, etc.
  						var type = this.attribute('type').value;
  						newValue = type + '(' + newValue + ')';
  					}
  
  					this.getProperty().value = newValue;
  					updated = true;
  				}
  
  				return updated;
  			}
  
  			this.from = this.attribute('from');
  			this.to = this.attribute('to');
  			this.values = this.attribute('values');
  			if (this.values.hasValue()) this.values.value = this.values.value.split(';');
  
  			// fraction of duration we've covered
  			this.progress = function() {
  				var ret = { progress: (this.duration - this.begin) / (this.maxDuration - this.begin) };
  				if (this.values.hasValue()) {
  					var p = ret.progress * (this.values.value.length - 1);
  					var lb = Math.floor(p), ub = Math.ceil(p);
  					ret.from = new svg.Property('from', parseFloat(this.values.value[lb]));
  					ret.to = new svg.Property('to', parseFloat(this.values.value[ub]));
  					ret.progress = (p - lb) / (ub - lb);
  				}
  				else {
  					ret.from = this.from;
  					ret.to = this.to;
  				}
  				return ret;
  			}
  		}
  		svg.Element.AnimateBase.prototype = new svg.Element.ElementBase;
  
  		// animate element
  		svg.Element.animate = function(node) {
  			this.base = svg.Element.AnimateBase;
  			this.base(node);
  
  			this.calcValue = function() {
  				var p = this.progress();
  
  				// tween value linearly
  				var newValue = p.from.numValue() + (p.to.numValue() - p.from.numValue()) * p.progress;
  				return newValue + this.initialUnits;
  			};
  		}
  		svg.Element.animate.prototype = new svg.Element.AnimateBase;
  
  		// animate color element
  		svg.Element.animateColor = function(node) {
  			this.base = svg.Element.AnimateBase;
  			this.base(node);
  
  			this.calcValue = function() {
  				var p = this.progress();
  				var from = new RGBColor(p.from.value);
  				var to = new RGBColor(p.to.value);
  
  				if (from.ok && to.ok) {
  					// tween color linearly
  					var r = from.r + (to.r - from.r) * p.progress;
  					var g = from.g + (to.g - from.g) * p.progress;
  					var b = from.b + (to.b - from.b) * p.progress;
  					return 'rgb('+parseInt(r,10)+','+parseInt(g,10)+','+parseInt(b,10)+')';
  				}
  				return this.attribute('from').value;
  			};
  		}
  		svg.Element.animateColor.prototype = new svg.Element.AnimateBase;
  
  		// animate transform element
  		svg.Element.animateTransform = function(node) {
  			this.base = svg.Element.AnimateBase;
  			this.base(node);
  
  			this.calcValue = function() {
  				var p = this.progress();
  
  				// tween value linearly
  				var from = svg.ToNumberArray(p.from.value);
  				var to = svg.ToNumberArray(p.to.value);
  				var newValue = '';
  				for (var i=0; i<from.length; i++) {
  					newValue += from[i] + (to[i] - from[i]) * p.progress + ' ';
  				}
  				return newValue;
  			};
  		}
  		svg.Element.animateTransform.prototype = new svg.Element.animate;
  
  		// font element
  		svg.Element.font = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.horizAdvX = this.attribute('horiz-adv-x').numValue();
  
  			this.isRTL = false;
  			this.isArabic = false;
  			this.fontFace = null;
  			this.missingGlyph = null;
  			this.glyphs = [];
  			for (var i=0; i<this.children.length; i++) {
  				var child = this.children[i];
  				if (child.type == 'font-face') {
  					this.fontFace = child;
  					if (child.style('font-family').hasValue()) {
  						svg.Definitions[child.style('font-family').value] = this;
  					}
  				}
  				else if (child.type == 'missing-glyph') this.missingGlyph = child;
  				else if (child.type == 'glyph') {
  					if (child.arabicForm != '') {
  						this.isRTL = true;
  						this.isArabic = true;
  						if (typeof(this.glyphs[child.unicode]) == 'undefined') this.glyphs[child.unicode] = [];
  						this.glyphs[child.unicode][child.arabicForm] = child;
  					}
  					else {
  						this.glyphs[child.unicode] = child;
  					}
  				}
  			}
  		}
  		svg.Element.font.prototype = new svg.Element.ElementBase;
  
  		// font-face element
  		svg.Element.fontface = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.ascent = this.attribute('ascent').value;
  			this.descent = this.attribute('descent').value;
  			this.unitsPerEm = this.attribute('units-per-em').numValue();
  		}
  		svg.Element.fontface.prototype = new svg.Element.ElementBase;
  
  		// missing-glyph element
  		svg.Element.missingglyph = function(node) {
  			this.base = svg.Element.path;
  			this.base(node);
  
  			this.horizAdvX = 0;
  		}
  		svg.Element.missingglyph.prototype = new svg.Element.path;
  
  		// glyph element
  		svg.Element.glyph = function(node) {
  			this.base = svg.Element.path;
  			this.base(node);
  
  			this.horizAdvX = this.attribute('horiz-adv-x').numValue();
  			this.unicode = this.attribute('unicode').value;
  			this.arabicForm = this.attribute('arabic-form').value;
  		}
  		svg.Element.glyph.prototype = new svg.Element.path;
  
  		// text element
  		svg.Element.text = function(node) {
  			this.captureTextNodes = true;
  			this.base = svg.Element.RenderedElementBase;
  			this.base(node);
  
  			this.baseSetContext = this.setContext;
  			this.setContext = function(ctx) {
  				this.baseSetContext(ctx);
  
  				var textBaseline = this.style('dominant-baseline').toTextBaseline();
  				if (textBaseline == null) textBaseline = this.style('alignment-baseline').toTextBaseline();
  				if (textBaseline != null) ctx.textBaseline = textBaseline;
  			}
  
  			this.getBoundingBox = function () {
  				var x = this.attribute('x').toPixels('x');
  				var y = this.attribute('y').toPixels('y');
  				var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
  				return new svg.BoundingBox(x, y - fontSize, x + Math.floor(fontSize * 2.0 / 3.0) * this.children[0].getText().length, y);
  			}
  
  			this.renderChildren = function(ctx) {
  				this.x = this.attribute('x').toPixels('x');
  				this.y = this.attribute('y').toPixels('y');
  				this.x += this.getAnchorDelta(ctx, this, 0);
  				for (var i=0; i<this.children.length; i++) {
  					this.renderChild(ctx, this, i);
  				}
  			}
  
  			this.getAnchorDelta = function (ctx, parent, startI) {
  				var textAnchor = this.style('text-anchor').valueOrDefault('start');
  				if (textAnchor != 'start') {
  					var width = 0;
  					for (var i=startI; i<parent.children.length; i++) {
  						var child = parent.children[i];
  						if (i > startI && child.attribute('x').hasValue()) break; // new group
  						width += child.measureTextRecursive(ctx);
  					}
  					return -1 * (textAnchor == 'end' ? width : width / 2.0);
  				}
  				return 0;
  			}
  
  			this.renderChild = function(ctx, parent, i) {
  				var child = parent.children[i];
  				if (child.attribute('x').hasValue()) {
  					child.x = child.attribute('x').toPixels('x') + this.getAnchorDelta(ctx, parent, i);
  					if (child.attribute('dx').hasValue()) child.x += child.attribute('dx').toPixels('x');
  				}
  				else {
  					if (this.attribute('dx').hasValue()) this.x += this.attribute('dx').toPixels('x');
  					if (child.attribute('dx').hasValue()) this.x += child.attribute('dx').toPixels('x');
  					child.x = this.x;
  				}
  				this.x = child.x + child.measureText(ctx);
  
  				if (child.attribute('y').hasValue()) {
  					child.y = child.attribute('y').toPixels('y');
  					if (child.attribute('dy').hasValue()) child.y += child.attribute('dy').toPixels('y');
  				}
  				else {
  					if (this.attribute('dy').hasValue()) this.y += this.attribute('dy').toPixels('y');
  					if (child.attribute('dy').hasValue()) this.y += child.attribute('dy').toPixels('y');
  					child.y = this.y;
  				}
  				this.y = child.y;
  
  				child.render(ctx);
  
  				for (var i=0; i<child.children.length; i++) {
  					this.renderChild(ctx, child, i);
  				}
  			}
  		}
  		svg.Element.text.prototype = new svg.Element.RenderedElementBase;
  
  		// text base
  		svg.Element.TextElementBase = function(node) {
  			this.base = svg.Element.RenderedElementBase;
  			this.base(node);
  
  			this.getGlyph = function(font, text, i) {
  				var c = text[i];
  				var glyph = null;
  				if (font.isArabic) {
  					var arabicForm = 'isolated';
  					if ((i==0 || text[i-1]==' ') && i<text.length-2 && text[i+1]!=' ') arabicForm = 'terminal';
  					if (i>0 && text[i-1]!=' ' && i<text.length-2 && text[i+1]!=' ') arabicForm = 'medial';
  					if (i>0 && text[i-1]!=' ' && (i == text.length-1 || text[i+1]==' ')) arabicForm = 'initial';
  					if (typeof(font.glyphs[c]) != 'undefined') {
  						glyph = font.glyphs[c][arabicForm];
  						if (glyph == null && font.glyphs[c].type == 'glyph') glyph = font.glyphs[c];
  					}
  				}
  				else {
  					glyph = font.glyphs[c];
  				}
  				if (glyph == null) glyph = font.missingGlyph;
  				return glyph;
  			}
  
  			this.renderChildren = function(ctx) {
  				var customFont = this.parent.style('font-family').getDefinition();
  				if (customFont != null) {
  					var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
  					var fontStyle = this.parent.style('font-style').valueOrDefault(svg.Font.Parse(svg.ctx.font).fontStyle);
  					var text = this.getText();
  					if (customFont.isRTL) text = text.split("").reverse().join("");
  
  					var dx = svg.ToNumberArray(this.parent.attribute('dx').value);
  					for (var i=0; i<text.length; i++) {
  						var glyph = this.getGlyph(customFont, text, i);
  						var scale = fontSize / customFont.fontFace.unitsPerEm;
  						ctx.translate(this.x, this.y);
  						ctx.scale(scale, -scale);
  						var lw = ctx.lineWidth;
  						ctx.lineWidth = ctx.lineWidth * customFont.fontFace.unitsPerEm / fontSize;
  						if (fontStyle == 'italic') ctx.transform(1, 0, .4, 1, 0, 0);
  						glyph.render(ctx);
  						if (fontStyle == 'italic') ctx.transform(1, 0, -.4, 1, 0, 0);
  						ctx.lineWidth = lw;
  						ctx.scale(1/scale, -1/scale);
  						ctx.translate(-this.x, -this.y);
  
  						this.x += fontSize * (glyph.horizAdvX || customFont.horizAdvX) / customFont.fontFace.unitsPerEm;
  						if (typeof(dx[i]) != 'undefined' && !isNaN(dx[i])) {
  							this.x += dx[i];
  						}
  					}
  					return;
  				}
  
  				if (ctx.fillStyle != '') ctx.fillText(svg.compressSpaces(this.getText()), this.x, this.y);
  				if (ctx.strokeStyle != '') ctx.strokeText(svg.compressSpaces(this.getText()), this.x, this.y);
  			}
  
  			this.getText = function() {
  				// OVERRIDE ME
  			}
  
  			this.measureTextRecursive = function(ctx) {
  				var width = this.measureText(ctx);
  				for (var i=0; i<this.children.length; i++) {
  					width += this.children[i].measureTextRecursive(ctx);
  				}
  				return width;
  			}
  
  			this.measureText = function(ctx) {
  				var customFont = this.parent.style('font-family').getDefinition();
  				if (customFont != null) {
  					var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
  					var measure = 0;
  					var text = this.getText();
  					if (customFont.isRTL) text = text.split("").reverse().join("");
  					var dx = svg.ToNumberArray(this.parent.attribute('dx').value);
  					for (var i=0; i<text.length; i++) {
  						var glyph = this.getGlyph(customFont, text, i);
  						measure += (glyph.horizAdvX || customFont.horizAdvX) * fontSize / customFont.fontFace.unitsPerEm;
  						if (typeof(dx[i]) != 'undefined' && !isNaN(dx[i])) {
  							measure += dx[i];
  						}
  					}
  					return measure;
  				}
  
  				var textToMeasure = svg.compressSpaces(this.getText());
  				if (!ctx.measureText) return textToMeasure.length * 10;
  
  				ctx.save();
  				this.setContext(ctx);
  				var width = ctx.measureText(textToMeasure).width;
  				ctx.restore();
  				return width;
  			}
  		}
  		svg.Element.TextElementBase.prototype = new svg.Element.RenderedElementBase;
  
  		// tspan
  		svg.Element.tspan = function(node) {
  			this.captureTextNodes = true;
  			this.base = svg.Element.TextElementBase;
  			this.base(node);
  
  			this.text = svg.compressSpaces(node.value || node.text || node.textContent || '');
  			this.getText = function() {
  				// if this node has children, then they own the text
  				if (this.children.length > 0) { return ''; }
  				return this.text;
  			}
  		}
  		svg.Element.tspan.prototype = new svg.Element.TextElementBase;
  
  		// tref
  		svg.Element.tref = function(node) {
  			this.base = svg.Element.TextElementBase;
  			this.base(node);
  
  			this.getText = function() {
  				var element = this.getHrefAttribute().getDefinition();
  				if (element != null) return element.children[0].getText();
  			}
  		}
  		svg.Element.tref.prototype = new svg.Element.TextElementBase;
  
  		// a element
  		svg.Element.a = function(node) {
  			this.base = svg.Element.TextElementBase;
  			this.base(node);
  
  			this.hasText = node.childNodes.length > 0;
  			for (var i=0; i<node.childNodes.length; i++) {
  				if (node.childNodes[i].nodeType != 3) this.hasText = false;
  			}
  
  			// this might contain text
  			this.text = this.hasText ? node.childNodes[0].value : '';
  			this.getText = function() {
  				return this.text;
  			}
  
  			this.baseRenderChildren = this.renderChildren;
  			this.renderChildren = function(ctx) {
  				if (this.hasText) {
  					// render as text element
  					this.baseRenderChildren(ctx);
  					var fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
  					svg.Mouse.checkBoundingBox(this, new svg.BoundingBox(this.x, this.y - fontSize.toPixels('y'), this.x + this.measureText(ctx), this.y));
  				}
  				else if (this.children.length > 0) {
  					// render as temporary group
  					var g = new svg.Element.g();
  					g.children = this.children;
  					g.parent = this;
  					g.render(ctx);
  				}
  			}
  
  			this.onclick = function() {
  				window.open(this.getHrefAttribute().value);
  			}
  
  			this.onmousemove = function() {
  				svg.ctx.canvas.style.cursor = 'pointer';
  			}
  		}
  		svg.Element.a.prototype = new svg.Element.TextElementBase;
  
  		// image element
  		svg.Element.image = function(node) {
  			this.base = svg.Element.RenderedElementBase;
  			this.base(node);
  
  			var href = this.getHrefAttribute().value;
  			if (href == '') { return; }
  			var isSvg = href.match(/\.svg$/)
  
  			svg.Images.push(this);
  			this.loaded = false;
  			if (!isSvg) {
  				this.img = document.createElement('img');
  				if (svg.opts['useCORS'] == true) { this.img.crossOrigin = 'Anonymous'; }
  				var self = this;
  				this.img.onload = function() { self.loaded = true; }
  				this.img.onerror = function() { svg.log('ERROR: image "' + href + '" not found'); self.loaded = true; }
  				this.img.src = href;
  			}
  			else {
  				this.img = svg.ajax(href);
  				this.loaded = true;
  			}
  
  			this.renderChildren = function(ctx) {
  				var x = this.attribute('x').toPixels('x');
  				var y = this.attribute('y').toPixels('y');
  
  				var width = this.attribute('width').toPixels('x');
  				var height = this.attribute('height').toPixels('y');
  				if (width == 0 || height == 0) return;
  
  				ctx.save();
  				if (isSvg) {
  					ctx.drawSvg(this.img, x, y, width, height);
  				}
  				else {
  					ctx.translate(x, y);
  					svg.AspectRatio(ctx,
  									this.attribute('preserveAspectRatio').value,
  									width,
  									this.img.width,
  									height,
  									this.img.height,
  									0,
  									0);
  					ctx.drawImage(this.img, 0, 0);
  				}
  				ctx.restore();
  			}
  
  			this.getBoundingBox = function() {
  				var x = this.attribute('x').toPixels('x');
  				var y = this.attribute('y').toPixels('y');
  				var width = this.attribute('width').toPixels('x');
  				var height = this.attribute('height').toPixels('y');
  				return new svg.BoundingBox(x, y, x + width, y + height);
  			}
  		}
  		svg.Element.image.prototype = new svg.Element.RenderedElementBase;
  
  		// group element
  		svg.Element.g = function(node) {
  			this.base = svg.Element.RenderedElementBase;
  			this.base(node);
  
  			this.getBoundingBox = function() {
  				var bb = new svg.BoundingBox();
  				for (var i=0; i<this.children.length; i++) {
  					if (!this.children[i].getGradient) {
  					// if (!this.children[i].getBoundingBox) {
  					 bb.addBoundingBox(this.children[i].getBoundingBox());
  					}
  				}
  				return bb;
  			};
  		}
  		svg.Element.g.prototype = new svg.Element.RenderedElementBase;
  
  		// symbol element
  		svg.Element.symbol = function(node) {
  			this.base = svg.Element.RenderedElementBase;
  			this.base(node);
  
  			this.render = function(ctx) {
  				// NO RENDER
  			};
  		}
  		svg.Element.symbol.prototype = new svg.Element.RenderedElementBase;
  
  		// style element
  		svg.Element.style = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			// text, or spaces then CDATA
  			var css = ''
  			for (var i=0; i<node.childNodes.length; i++) {
  			  css += node.childNodes[i].data;
  			}
  			css = css.replace(/(\/\*([^*]|[\r\n]|(\*+([^*\/]|[\r\n])))*\*+\/)|(^[\s]*\/\/.*)/gm, ''); // remove comments
  			css = svg.compressSpaces(css); // replace whitespace
  			var cssDefs = css.split('}');
  			for (var i=0; i<cssDefs.length; i++) {
  				if (svg.trim(cssDefs[i]) != '') {
  					var cssDef = cssDefs[i].split('{');
  					var cssClasses = cssDef[0].split(',');
  					var cssProps = cssDef[1].split(';');
  					for (var j=0; j<cssClasses.length; j++) {
  						var cssClass = svg.trim(cssClasses[j]);
  						if (cssClass != '') {
  							var props = {};
  							for (var k=0; k<cssProps.length; k++) {
  								var prop = cssProps[k].indexOf(':');
  								var name = cssProps[k].substr(0, prop);
  								var value = cssProps[k].substr(prop + 1, cssProps[k].length - prop);
  								if (name != null && value != null) {
  									props[svg.trim(name)] = new svg.Property(svg.trim(name), svg.trim(value));
  								}
  							}
  							svg.Styles[cssClass] = props;
  							svg.StylesSpecificity[cssClass] = getSelectorSpecificity(cssClass);
  							if (cssClass == '@font-face') {
  								var fontFamily = props['font-family'].value.replace(/"/g,'');
  								var srcs = props['src'].value.split(',');
  								for (var s=0; s<srcs.length; s++) {
  									if (srcs[s].indexOf('format("svg")') > 0) {
  										var urlStart = srcs[s].indexOf('url');
  										var urlEnd = srcs[s].indexOf(')', urlStart);
  										var url = srcs[s].substr(urlStart + 5, urlEnd - urlStart - 6);
  										var doc = svg.parseXml(svg.ajax(url));
  										var fonts = doc.getElementsByTagName('font');
  										for (var f=0; f<fonts.length; f++) {
  											var font = svg.CreateElement(fonts[f]);
  											svg.Definitions[fontFamily] = font;
  										}
  									}
  								}
  							}
  						}
  					}
  				}
  			}
  		}
  		svg.Element.style.prototype = new svg.Element.ElementBase;
  
  		// use element
  		svg.Element.use = function(node) {
  			this.base = svg.Element.RenderedElementBase;
  			this.base(node);
  
  			this.baseSetContext = this.setContext;
  			this.setContext = function(ctx) {
  				this.baseSetContext(ctx);
  				if (this.attribute('x').hasValue()) ctx.translate(this.attribute('x').toPixels('x'), 0);
  				if (this.attribute('y').hasValue()) ctx.translate(0, this.attribute('y').toPixels('y'));
  			}
  
  			var element = this.getHrefAttribute().getDefinition();
  
  			this.path = function(ctx) {
  				if (element != null) element.path(ctx);
  			}
  
  			this.getBoundingBox = function() {
  				if (element != null) return element.getBoundingBox();
  			}
  
  			this.renderChildren = function(ctx) {
  				if (element != null) {
  					var tempSvg = element;
  					if (element.type == 'symbol') {
  						// render me using a temporary svg element in symbol cases (http://www.w3.org/TR/SVG/struct.html#UseElement)
  						tempSvg = new svg.Element.svg();
  						tempSvg.type = 'svg';
  						tempSvg.attributes['viewBox'] = new svg.Property('viewBox', element.attribute('viewBox').value);
  						tempSvg.attributes['preserveAspectRatio'] = new svg.Property('preserveAspectRatio', element.attribute('preserveAspectRatio').value);
  						tempSvg.attributes['overflow'] = new svg.Property('overflow', element.attribute('overflow').value);
  						tempSvg.children = element.children;
  					}
  					if (tempSvg.type == 'svg') {
  						// if symbol or svg, inherit width/height from me
  						if (this.attribute('width').hasValue()) tempSvg.attributes['width'] = new svg.Property('width', this.attribute('width').value);
  						if (this.attribute('height').hasValue()) tempSvg.attributes['height'] = new svg.Property('height', this.attribute('height').value);
  					}
  					var oldParent = tempSvg.parent;
  					tempSvg.parent = null;
  					tempSvg.render(ctx);
  					tempSvg.parent = oldParent;
  				}
  			}
  		}
  		svg.Element.use.prototype = new svg.Element.RenderedElementBase;
  
  		// mask element
  		svg.Element.mask = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.apply = function(ctx, element) {
  				// render as temp svg
  				var x = this.attribute('x').toPixels('x');
  				var y = this.attribute('y').toPixels('y');
  				var width = this.attribute('width').toPixels('x');
  				var height = this.attribute('height').toPixels('y');
  
  				if (width == 0 && height == 0) {
  					var bb = new svg.BoundingBox();
  					for (var i=0; i<this.children.length; i++) {
  						bb.addBoundingBox(this.children[i].getBoundingBox());
  					}
  					var x = Math.floor(bb.x1);
  					var y = Math.floor(bb.y1);
  					var width = Math.floor(bb.width());
  					var	height = Math.floor(bb.height());
  				}
  
  				// temporarily remove mask to avoid recursion
  				var mask = element.attribute('mask').value;
  				element.attribute('mask').value = '';
  
  					var cMask = document.createElement('canvas');
  					cMask.width = x + width;
  					cMask.height = y + height;
  					var maskCtx = cMask.getContext('2d');
  					this.renderChildren(maskCtx);
  
  					var c = document.createElement('canvas');
  					c.width = x + width;
  					c.height = y + height;
  					var tempCtx = c.getContext('2d');
  					element.render(tempCtx);
  					tempCtx.globalCompositeOperation = 'destination-in';
  					tempCtx.fillStyle = maskCtx.createPattern(cMask, 'no-repeat');
  					tempCtx.fillRect(0, 0, x + width, y + height);
  
  					ctx.fillStyle = tempCtx.createPattern(c, 'no-repeat');
  					ctx.fillRect(0, 0, x + width, y + height);
  
  				// reassign mask
  				element.attribute('mask').value = mask;
  			}
  
  			this.render = function(ctx) {
  				// NO RENDER
  			}
  		}
  		svg.Element.mask.prototype = new svg.Element.ElementBase;
  
  		// clip element
  		svg.Element.clipPath = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.apply = function(ctx) {
  				var oldBeginPath = CanvasRenderingContext2D.prototype.beginPath;
  				CanvasRenderingContext2D.prototype.beginPath = function () { };
  
  				var oldClosePath = CanvasRenderingContext2D.prototype.closePath;
  				CanvasRenderingContext2D.prototype.closePath = function () { };
  
  				oldBeginPath.call(ctx);
  				for (var i=0; i<this.children.length; i++) {
  					var child = this.children[i];
  					if (typeof(child.path) != 'undefined') {
  						var transform = null;
  						if (child.attribute('transform').hasValue()) {
  							transform = new svg.Transform(child.attribute('transform').value);
  							transform.apply(ctx);
  						}
  						child.path(ctx);
  						CanvasRenderingContext2D.prototype.closePath = oldClosePath;
  						if (transform) { transform.unapply(ctx); }
  					}
  				}
  				oldClosePath.call(ctx);
  				ctx.clip();
  
  				CanvasRenderingContext2D.prototype.beginPath = oldBeginPath;
  				CanvasRenderingContext2D.prototype.closePath = oldClosePath;
  			}
  
  			this.render = function(ctx) {
  				// NO RENDER
  			}
  		}
  		svg.Element.clipPath.prototype = new svg.Element.ElementBase;
  
  		// filters
  		svg.Element.filter = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.apply = function(ctx, element) {
  				// render as temp svg
  				var bb = element.getBoundingBox();
  				var x = Math.floor(bb.x1);
  				var y = Math.floor(bb.y1);
  				var width = Math.floor(bb.width());
  				var	height = Math.floor(bb.height());
  
  				// temporarily remove filter to avoid recursion
  				var filter = element.style('filter').value;
  				element.style('filter').value = '';
  
  				var px = 0, py = 0;
  				for (var i=0; i<this.children.length; i++) {
  					var efd = this.children[i].extraFilterDistance || 0;
  					px = Math.max(px, efd);
  					py = Math.max(py, efd);
  				}
  
  				var c = document.createElement('canvas');
  				c.width = width + 2*px;
  				c.height = height + 2*py;
  				var tempCtx = c.getContext('2d');
  				tempCtx.translate(-x + px, -y + py);
  				element.render(tempCtx);
  
  				// apply filters
  				for (var i=0; i<this.children.length; i++) {
  					if(this.children[i].apply)	this.children[i].apply(tempCtx, 0, 0, width + 2*px, height + 2*py);
  				}
  
  				// render on me
  				ctx.drawImage(c, 0, 0, width + 2*px, height + 2*py, x - px, y - py, width + 2*px, height + 2*py);
  
  				// reassign filter
  				element.style('filter', true).value = filter;
  			}
  
  			this.render = function(ctx) {
  				// NO RENDER
  			}
  		}
  		svg.Element.filter.prototype = new svg.Element.ElementBase;
  
  		svg.Element.feMorphology = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.apply = function(ctx, x, y, width, height) {
  				// TODO: implement
  			}
  		}
  		svg.Element.feMorphology.prototype = new svg.Element.ElementBase;
  
  		svg.Element.feComposite = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.apply = function(ctx, x, y, width, height) {
  				// TODO: implement
  			}
  		}
  		svg.Element.feComposite.prototype = new svg.Element.ElementBase;
  
  		svg.Element.feColorMatrix = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			var matrix = svg.ToNumberArray(this.attribute('values').value);
  			switch (this.attribute('type').valueOrDefault('matrix')) { // http://www.w3.org/TR/SVG/filters.html#feColorMatrixElement
  				case 'saturate':
  					var s = matrix[0];
  					matrix = [0.213+0.787*s,0.715-0.715*s,0.072-0.072*s,0,0,
  							  0.213-0.213*s,0.715+0.285*s,0.072-0.072*s,0,0,
  							  0.213-0.213*s,0.715-0.715*s,0.072+0.928*s,0,0,
  							  0,0,0,1,0,
  							  0,0,0,0,1];
  					break;
  				case 'hueRotate':
  					var a = matrix[0] * Math.PI / 180.0;
  					var c = function (m1,m2,m3) { return m1 + Math.cos(a)*m2 + Math.sin(a)*m3; };
  					matrix = [c(0.213,0.787,-0.213),c(0.715,-0.715,-0.715),c(0.072,-0.072,0.928),0,0,
  							  c(0.213,-0.213,0.143),c(0.715,0.285,0.140),c(0.072,-0.072,-0.283),0,0,
  							  c(0.213,-0.213,-0.787),c(0.715,-0.715,0.715),c(0.072,0.928,0.072),0,0,
  							  0,0,0,1,0,
  							  0,0,0,0,1];
  					break;
  				case 'luminanceToAlpha':
  					matrix = [0,0,0,0,0,
  							  0,0,0,0,0,
  							  0,0,0,0,0,
  							  0.2125,0.7154,0.0721,0,0,
  							  0,0,0,0,1];
  					break;
  			}
  
  			function imGet(img, x, y, width, height, rgba) {
  				return img[y*width*4 + x*4 + rgba];
  			}
  
  			function imSet(img, x, y, width, height, rgba, val) {
  				img[y*width*4 + x*4 + rgba] = val;
  			}
  
  			function m(i, v) {
  				var mi = matrix[i];
  				return mi * (mi < 0 ? v - 255 : v);
  			}
  
  			this.apply = function(ctx, x, y, width, height) {
  				// assuming x==0 && y==0 for now
  				var srcData = ctx.getImageData(0, 0, width, height);
  				for (var y = 0; y < height; y++) {
  					for (var x = 0; x < width; x++) {
  						var r = imGet(srcData.data, x, y, width, height, 0);
  						var g = imGet(srcData.data, x, y, width, height, 1);
  						var b = imGet(srcData.data, x, y, width, height, 2);
  						var a = imGet(srcData.data, x, y, width, height, 3);
  						imSet(srcData.data, x, y, width, height, 0, m(0,r)+m(1,g)+m(2,b)+m(3,a)+m(4,1));
  						imSet(srcData.data, x, y, width, height, 1, m(5,r)+m(6,g)+m(7,b)+m(8,a)+m(9,1));
  						imSet(srcData.data, x, y, width, height, 2, m(10,r)+m(11,g)+m(12,b)+m(13,a)+m(14,1));
  						imSet(srcData.data, x, y, width, height, 3, m(15,r)+m(16,g)+m(17,b)+m(18,a)+m(19,1));
  					}
  				}
  				ctx.clearRect(0, 0, width, height);
  				ctx.putImageData(srcData, 0, 0);
  			}
  		}
  		svg.Element.feColorMatrix.prototype = new svg.Element.ElementBase;
  
  		svg.Element.feGaussianBlur = function(node) {
  			this.base = svg.Element.ElementBase;
  			this.base(node);
  
  			this.blurRadius = Math.floor(this.attribute('stdDeviation').numValue());
  			this.extraFilterDistance = this.blurRadius;
  
  			this.apply = function(ctx, x, y, width, height) {
  				if (typeof(stackBlurCanvasRGBA) == 'undefined') {
  					svg.log('ERROR: StackBlur.js must be included for blur to work');
  					return;
  				}
  
  				// StackBlur requires canvas be on document
  				ctx.canvas.id = svg.UniqueId();
  				ctx.canvas.style.display = 'none';
  				document.body.appendChild(ctx.canvas);
  				stackBlurCanvasRGBA(ctx.canvas.id, x, y, width, height, this.blurRadius);
  				document.body.removeChild(ctx.canvas);
  			}
  		}
  		svg.Element.feGaussianBlur.prototype = new svg.Element.ElementBase;
  
  		// title element, do nothing
  		svg.Element.title = function(node) {
  		}
  		svg.Element.title.prototype = new svg.Element.ElementBase;
  
  		// desc element, do nothing
  		svg.Element.desc = function(node) {
  		}
  		svg.Element.desc.prototype = new svg.Element.ElementBase;
  
  		svg.Element.MISSING = function(node) {
  			svg.log('ERROR: Element \'' + node.nodeName + '\' not yet implemented.');
  		}
  		svg.Element.MISSING.prototype = new svg.Element.ElementBase;
  
  		// element factory
  		svg.CreateElement = function(node) {
  			var className = node.nodeName.replace(/^[^:]+:/,''); // remove namespace
  			className = className.replace(/\-/g,''); // remove dashes
  			var e = null;
  			if (typeof(svg.Element[className]) != 'undefined') {
  				e = new svg.Element[className](node);
  			}
  			else {
  				e = new svg.Element.MISSING(node);
  			}
  
  			e.type = node.nodeName;
  			return e;
  		}
  
  		// load from url
  		svg.load = function(ctx, url) {
  			svg.loadXml(ctx, svg.ajax(url));
  		}
  
  		// load from xml
  		svg.loadXml = function(ctx, xml) {
  			svg.loadXmlDoc(ctx, svg.parseXml(xml));
  		}
  
  		svg.loadXmlDoc = function(ctx, dom) {
  			svg.init(ctx);
  
  			var mapXY = function(p) {
  				var e = ctx.canvas;
  				while (e) {
  					p.x -= e.offsetLeft;
  					p.y -= e.offsetTop;
  					e = e.offsetParent;
  				}
  				if (window.scrollX) p.x += window.scrollX;
  				if (window.scrollY) p.y += window.scrollY;
  				return p;
  			}
  
  			// bind mouse
  			if (svg.opts['ignoreMouse'] != true) {
  				ctx.canvas.onclick = function(e) {
  					var p = mapXY(new svg.Point(e != null ? e.clientX : event.clientX, e != null ? e.clientY : event.clientY));
  					svg.Mouse.onclick(p.x, p.y);
  				};
  				ctx.canvas.onmousemove = function(e) {
  					var p = mapXY(new svg.Point(e != null ? e.clientX : event.clientX, e != null ? e.clientY : event.clientY));
  					svg.Mouse.onmousemove(p.x, p.y);
  				};
  			}
  
  			var e = svg.CreateElement(dom.documentElement);
  			e.root = true;
  			e.addStylesFromStyleDefinition();
  
  			// render loop
  			var isFirstRender = true;
  			var draw = function() {
  				svg.ViewPort.Clear();
  				if (ctx.canvas.parentNode) svg.ViewPort.SetCurrent(ctx.canvas.parentNode.clientWidth, ctx.canvas.parentNode.clientHeight);
  
  				if (svg.opts['ignoreDimensions'] != true) {
  					// set canvas size
  					if (e.style('width').hasValue()) {
  						ctx.canvas.width = e.style('width').toPixels('x');
  						ctx.canvas.style.width = ctx.canvas.width + 'px';
  					}
  					if (e.style('height').hasValue()) {
  						ctx.canvas.height = e.style('height').toPixels('y');
  						ctx.canvas.style.height = ctx.canvas.height + 'px';
  					}
  				}
  				var cWidth = ctx.canvas.clientWidth || ctx.canvas.width;
  				var cHeight = ctx.canvas.clientHeight || ctx.canvas.height;
  				if (svg.opts['ignoreDimensions'] == true && e.style('width').hasValue() && e.style('height').hasValue()) {
  					cWidth = e.style('width').toPixels('x');
  					cHeight = e.style('height').toPixels('y');
  				}
  				svg.ViewPort.SetCurrent(cWidth, cHeight);
  
  				if (svg.opts['offsetX'] != null) e.attribute('x', true).value = svg.opts['offsetX'];
  				if (svg.opts['offsetY'] != null) e.attribute('y', true).value = svg.opts['offsetY'];
  				if (svg.opts['scaleWidth'] != null || svg.opts['scaleHeight'] != null) {
  					var xRatio = null, yRatio = null, viewBox = svg.ToNumberArray(e.attribute('viewBox').value);
  
  					if (svg.opts['scaleWidth'] != null) {
  						if (e.attribute('width').hasValue()) xRatio = e.attribute('width').toPixels('x') / svg.opts['scaleWidth'];
  						else if (!isNaN(viewBox[2])) xRatio = viewBox[2] / svg.opts['scaleWidth'];
  					}
  
  					if (svg.opts['scaleHeight'] != null) {
  						if (e.attribute('height').hasValue()) yRatio = e.attribute('height').toPixels('y') / svg.opts['scaleHeight'];
  						else if (!isNaN(viewBox[3])) yRatio = viewBox[3] / svg.opts['scaleHeight'];
  					}
  
  					if (xRatio == null) { xRatio = yRatio; }
  					if (yRatio == null) { yRatio = xRatio; }
  
  					e.attribute('width', true).value = svg.opts['scaleWidth'];
  					e.attribute('height', true).value = svg.opts['scaleHeight'];
  					e.attribute('transform', true).value += ' scale('+(1.0/xRatio)+','+(1.0/yRatio)+')';
  				}
  
  				// clear and render
  				if (svg.opts['ignoreClear'] != true) {
  					ctx.clearRect(0, 0, cWidth, cHeight);
  				}
  				e.render(ctx);
  				if (isFirstRender) {
  					isFirstRender = false;
  					if (typeof(svg.opts['renderCallback']) == 'function') svg.opts['renderCallback'](dom);
  				}
  			}
  
  			var waitingForImages = true;
  			if (svg.ImagesLoaded()) {
  				waitingForImages = false;
  				draw();
  			}
  			svg.intervalID = setInterval(function() {
  				var needUpdate = false;
  
  				if (waitingForImages && svg.ImagesLoaded()) {
  					waitingForImages = false;
  					needUpdate = true;
  				}
  
  				// need update from mouse events?
  				if (svg.opts['ignoreMouse'] != true) {
  					needUpdate = needUpdate | svg.Mouse.hasEvents();
  				}
  
  				// need update from animations?
  				if (svg.opts['ignoreAnimation'] != true) {
  					for (var i=0; i<svg.Animations.length; i++) {
  						needUpdate = needUpdate | svg.Animations[i].update(1000 / svg.FRAMERATE);
  					}
  				}
  
  				// need update from redraw?
  				if (typeof(svg.opts['forceRedraw']) == 'function') {
  					if (svg.opts['forceRedraw']() == true) needUpdate = true;
  				}
  
  				// render if needed
  				if (needUpdate) {
  					draw();
  					svg.Mouse.runEvents(); // run and clear our events
  				}
  			}, 1000 / svg.FRAMERATE);
  		}
  
  		svg.stop = function() {
  			if (svg.intervalID) {
  				clearInterval(svg.intervalID);
  			}
  		}
  
  		svg.Mouse = new (function() {
  			this.events = [];
  			this.hasEvents = function() { return this.events.length != 0; }
  
  			this.onclick = function(x, y) {
  				this.events.push({ type: 'onclick', x: x, y: y,
  					run: function(e) { if (e.onclick) e.onclick(); }
  				});
  			}
  
  			this.onmousemove = function(x, y) {
  				this.events.push({ type: 'onmousemove', x: x, y: y,
  					run: function(e) { if (e.onmousemove) e.onmousemove(); }
  				});
  			}
  
  			this.eventElements = [];
  
  			this.checkPath = function(element, ctx) {
  				for (var i=0; i<this.events.length; i++) {
  					var e = this.events[i];
  					if (ctx.isPointInPath && ctx.isPointInPath(e.x, e.y)) this.eventElements[i] = element;
  				}
  			}
  
  			this.checkBoundingBox = function(element, bb) {
  				for (var i=0; i<this.events.length; i++) {
  					var e = this.events[i];
  					if (bb.isPointInBox(e.x, e.y)) this.eventElements[i] = element;
  				}
  			}
  
  			this.runEvents = function() {
  				svg.ctx.canvas.style.cursor = '';
  
  				for (var i=0; i<this.events.length; i++) {
  					var e = this.events[i];
  					var element = this.eventElements[i];
  					while (element) {
  						e.run(element);
  						element = element.parent;
  					}
  				}
  
  				// done running, clear
  				this.events = [];
  				this.eventElements = [];
  			}
  		});
  
  		return svg;
  	}
  })();
  
  if (typeof(CanvasRenderingContext2D) != 'undefined') {
  	CanvasRenderingContext2D.prototype.drawSvg = function(s, dx, dy, dw, dh) {
  		canvg(this.canvas, s, {
  			ignoreMouse: true,
  			ignoreAnimation: true,
  			ignoreDimensions: true,
  			ignoreClear: true,
  			offsetX: dx,
  			offsetY: dy,
  			scaleWidth: dw,
  			scaleHeight: dh
  		});
  	}
  }
  