Added viewbox toString() method

3 files changed, 20 insertions, 4 deletions

diff --git a/dist/svg.js b/dist/svg.js
index f131d4f..44b3b1a 100644
--- a/dist/svg.js
+++ b/dist/svg.js
@@ -1,4 +1,4 @@
-/* svg.js v0.6-7-g1e18370 - svg viewbox bbox element container fx event group arrange defs mask pattern gradient doc shape wrap rect ellipse line poly path image text nested sugar - svgjs.com/license */
+/* svg.js v0.6-8-g7529b96 - svg viewbox bbox element container fx event group arrange defs mask pattern gradient doc shape wrap rect ellipse line poly path image text nested sugar - svgjs.com/license */
 (function() {
 
   this.svg = function(element) {
@@ -69,6 +69,14 @@
     this.zoom = this.zoom || 1
     
   }
+  
+  SVG.extend(SVG.ViewBox, {
+    // Parse viewbox to string
+    toString: function() {
+      return this.x + ' ' + this.y + ' ' + this.width + ' ' + this.height
+    }
+    
+  })
 
   SVG.BBox = function(element) {
     /* actual, native bounding box */
diff --git a/dist/svg.min.js b/dist/svg.min.js
index 3de9953..5996ddf 100644
--- a/dist/svg.min.js
+++ b/dist/svg.min.js
@@ -1,2 +1,2 @@
-/* svg.js v0.6-7-g1e18370 - svg viewbox bbox element container fx event group arrange defs mask pattern gradient doc shape wrap rect ellipse line poly path image text nested sugar - svgjs.com/license */
-(function(){this.svg=function(e){if(SVG.supported)return new SVG.Doc(e)},this.SVG={ns:"http://www.w3.org/2000/svg",xlink:"http://www.w3.org/1999/xlink",did:0,create:function(e){return document.createElementNS(this.ns,e)},extend:function(e,t){for(var n in t)e.prototype[n]=t[n]}},SVG.supported=function(){return!!document.createElementNS&&!!document.createElementNS(SVG.ns,"svg").createSVGRect}();if(!SVG.supported)return!1;SVG.ViewBox=function(e){var t,n,r,i,s=e.bbox(),o=(e.attr("viewBox")||"").match(/[\d\.]+/g);this.x=s.x,this.y=s.y,this.width=e.node.offsetWidth||e.attr("width"),this.height=e.node.offsetHeight||e.attr("height"),o&&(t=parseFloat(o[0]),n=parseFloat(o[1]),r=parseFloat(o[2])-t,i=parseFloat(o[3])-n,this.zoom=this.width/this.height>r/i?this.height/i:this.width/r,this.x=t,this.y=n,this.width=r,this.height=i),this.zoom=this.zoom||1},SVG.BBox=function(e){var t=e.node.getBBox();this.x=t.x+e.trans.x,this.y=t.y+e.trans.y,this.cx=t.x+e.trans.x+t.width/2,this.cy=t.y+e.trans.y+t.height/2,this.width=t.width,this.height=t.height},SVG.Element=function(e){if(this.node=e)this.type=e.nodeName;this.attrs={"fill-opacity":1,"stroke-opacity":1,"stroke-width":0,fill:"#000",stroke:"#000",opacity:1,x:0,y:0,cx:0,cy:0,width:0,height:0,r:0,rx:0,ry:0},this.trans={x:0,y:0,scaleX:1,scaleY:1,rotation:0,skewX:0,skewY:0}},SVG.extend(SVG.Element,{move:function(e,t){return this.attr({x:e,y:t})},center:function(e,t){var n=this.bbox();return this.move(e-n.width/2,t-n.height/2)},size:function(e,t){return this.attr({width:e,height:t})},clone:function(){var e;if(this instanceof SVG.Wrap)e=this.parent[this.child.node.nodeName](),e.attrs=this.attrs,e.child.trans=this.child.trans,e.child.attr(this.child.attrs).transform({}),e.plot&&e.plot(this.child.attrs[this.child instanceof SVG.Path?"d":"points"]);else{var t=this.node.nodeName;e=t=="rect"?this.parent[t](this.attrs.width,this.attrs.height):t=="ellipse"?this.parent[t](this.attrs.rx*2,this.attrs.ry*2):t=="image"?this.parent[t](this.src):t=="text"?this.parent[t](this.content):t=="g"?this.parent.group():this.parent[t](),e.attr(this.attrs)}return e.trans=this.trans,e.transform({})},remove:function(){return this.parent!=null?this.parent.remove(this):void 0},doc:function(){return this._parent(SVG.Doc)},nested:function(){return this._parent(SVG.Nested)},attr:function(e,t,n){if(arguments.length<2){if(typeof e!="object")return this._isStyle(e)?e=="text"?this.content:e=="leading"?this[e]:this.style[e]:this.attrs[e];for(t in e)this.attr(t,e[t])}else{this.attrs[e]=t;if(e=="x"&&this._isText())for(var r=this.lines.length-1;r>=0;r--)this.lines[r].attr(e,t);else n!=null?this.node.setAttributeNS(n,e,t):this.node.setAttribute(e,t);this._isStyle(e)&&(e=="text"?this.text(t):e=="leading"?this[e]=t:this.style[e]=t,this.text(this.content))}return this},transform:function(e){if(typeof e=="string")return this.trans[e];var t,n=[];for(t in e)e[t]!=null&&(this.trans[t]=e[t]);e=this.trans;if(e.rotation!=0){var r=this.bbox();n.push("rotate("+e.rotation+","+(e.cx!=null?e.cx:r.cx)+","+(e.cy!=null?e.cy:r.cy)+")")}return n.push("scale("+e.scaleX+","+e.scaleY+")"),e.skewX!=0&&n.push("skewX("+e.skewX+")"),e.skewY!=0&&n.push("skewY("+e.skewY+")"),n.push("translate("+e.x+","+e.y+")"),this.attr("transform",n.join(" "))},data:function(e,t,n){if(arguments.length<2)try{return JSON.parse(this.attr("data-"+e))}catch(r){return this.attr("data-"+e)}else t===null?this.node.removeAttribute("data-"+e):this.attr("data-"+e,n===!0?t:JSON.stringify(t));return this},bbox:function(){return new SVG.BBox(this)},inside:function(e,t){var n=this.bbox();return e>n.x&&t>n.y&&e<n.x+n.width&&t<n.y+n.height},show:function(){return this.node.style.display="",this},hide:function(){return this.node.style.display="none",this},visible:function(){return this.node.style.display!="none"},_parent:function(e){var t=this;while(t!=null&&!(t instanceof e))t=t.parent;return t},_isStyle:function(e){return typeof e=="string"&&this._isText()?/^font|text|leading/.test(e):!1},_isText:function(){return this instanceof SVG.Text}}),SVG.Container=function(e){this.constructor.call(this,e)},SVG.Container.prototype=new SVG.Element,SVG.extend(SVG.Container,{add:function(e,t){return this.has(e)||(t=t==null?this.children().length:t,this.children().splice(t,0,e),this.node.insertBefore(e.node,this.node.childNodes[t]||null),e.parent=this),this},put:function(e,t){return this.add(e,t),e},has:function(e){return this.children().indexOf(e)>=0},children:function(){return this._children||(this._children=[])},each:function(e){var t,n=this.children();for(t=0,length=n.length;t<length;t++)n[t]instanceof SVG.Shape&&e.apply(n[t],[t,n]);return this},remove:function(e){return this.removeAt(this.children().indexOf(e))},removeAt:function(e){if(0<=e&&e<this.children().length){var t=this.children()[e];this.children().splice(e,1),this.node.removeChild(t.node),t.parent=null}return this},defs:function(){return this._defs||(this._defs=this.put(new SVG.Defs,0))},level:function(){return this.remove(this.defs()).put(this.defs(),0)},group:function(){return this.put(new SVG.G)},rect:function(e,t){return this.put((new SVG.Rect).size(e,t))},circle:function(e){return this.ellipse(e)},ellipse:function(e,t){return this.put((new SVG.Ellipse).size(e,t))},polyline:function(e){return this.put(new SVG.Wrap(new SVG.Polyline)).plot(e)},polygon:function(e){return this.put(new SVG.Wrap(new SVG.Polygon)).plot(e)},path:function(e){return this.put(new SVG.Wrap(new SVG.Path)).plot(e)},image:function(e,t,n){return t=t!=null?t:100,this.put((new SVG.Image).load(e).size(t,n!=null?n:t))},text:function(e){return this.put((new SVG.Text).text(e))},nested:function(){return this.put(new SVG.Nested)},gradient:function(e,t){return this.defs().gradient(e,t)},pattern:function(e,t,n){return this.defs().pattern(e,t,n)},mask:function(){return this.defs().put(new SVG.Mask)},first:function(){return this.children()[0]instanceof SVG.Defs?this.children()[1]:this.children()[0]},last:function(){return this.children()[this.children().length-1]},viewbox:function(){return arguments.length==0?new SVG.ViewBox(this):this.attr("viewBox",Array.prototype.slice.call(arguments).join(" "))},clear:function(){this._children=[];while(this.node.hasChildNodes())this.node.removeChild(this.node.lastChild);return this}}),SVG.FX=function(e){this.target=e},SVG.extend(SVG.FX,{animate:function(e,t){e=e==null?1e3:e,t=t||"<>";var n,r,i,s=this.target,o=this,u=(new Date).getTime(),a=u+e;return this.interval=setInterval(function(){var f,l=(new Date).getTime(),c=l>a?1:(l-u)/e;if(n==null){n=[];for(var h in o.attrs)n.push(h)}if(r==null){r=[];for(var h in o.trans)r.push(h);i={}}c=t=="<>"?-Math.cos(c*Math.PI)/2+.5:t==">"?Math.sin(c*Math.PI/2):t=="<"?-Math.cos(c*Math.PI/2)+1:t=="-"?c:typeof t=="function"?t(c):c,o._move?s.move(o._at(o._move.x,c),o._at(o._move.y,c)):o._center&&s.move(o._at(o._center.x,c),o._at(o._center.y,c)),o._size&&s.size(o._at(o._size.width,c),o._at(o._size.height,c));for(f=n.length-1;f>=0;f--)s.attr(n[f],o._at(o.attrs[n[f]],c));if(r.length>0){for(f=r.length-1;f>=0;f--)i[r[f]]=o._at(o.trans[r[f]],c);s.transform(i)}l>a&&(clearInterval(o.interval),o._after?o._after.apply(s,[o]):o.stop())},e>10?10:e),this},attr:function(e,t,n){if(typeof e=="object")for(var r in e)this.attr(r,e[r]);else this.attrs[e]={from:this.target.attr(e),to:t};return this},transform:function(e){for(var t in e)this.trans[t]={from:this.target.trans[t],to:e[t]};return this},move:function(e,t){var n=this.target.bbox();return this._move={x:{from:n.x,to:e},y:{from:n.y,to:t}},this},size:function(e,t){var n=this.target.bbox();return this._size={width:{from:n.width,to:e},height:{from:n.height,to:t}},this},center:function(e,t){var n=this.target.bbox();return this._move={x:{from:n.cx,to:e},y:{from:n.cy,to:t}},this},after:function(e){return this._after=e,this},stop:function(){return clearInterval(this.interval),this.attrs={},this.trans={},this._move=null,this._size=null,this._after=null,this},_at:function(e,t){return typeof e.from=="number"?e.from+(e.to-e.from)*t:e.to.r||/^#/.test(e.to)?this._color(e,t):t<1?e.from:e.to},_color:function(e,t){var n,r;return n=this._h2r(e.from||"#000"),r=this._h2r(e.to),this._r2h({r:~~(n.r+(r.r-n.r)*t),g:~~(n.g+(r.g-n.g)*t),b:~~(n.b+(r.b-n.b)*t)})},_h2r:function(e){var t=/^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(this._fh(e));return t?{r:parseInt(t[1],16),g:parseInt(t[2],16),b:parseInt(t[3],16)}:{r:0,g:0,b:0}},_r2h:function(e){return"#"+this._c2h(e.r)+this._c2h(e.g)+this._c2h(e.b)},_c2h:function(e){var t=e.toString(16);return t.length==1?"0"+t:t},_fh:function(e){return e.length==4?["#",e.substring(1,2),e.substring(1,2),e.substring(2,3),e.substring(2,3),e.substring(3,4),e.substring(3,4)].join(""):e}}),SVG.extend(SVG.Element,{animate:function(e,t){return(this.fx||(this.fx=new SVG.FX(this))).stop().animate(e,t)},stop:function(){return this.fx.stop(),this}}),["click","dblclick","mousedown","mouseup","mouseover","mouseout","mousemove","mouseenter","mouseleave","touchstart","touchend","touchmove","touchcancel"].forEach(function(e){SVG.Element.prototype[e]=function(t){var n=this;return this.node["on"+e]=typeof t=="function"?function(){return t.apply(n,arguments)}:null,this}}),SVG.on=function(e,t,n){e.addEventListener?e.addEventListener(t,n,!1):e.attachEvent("on"+t,n)},SVG.off=function(e,t,n){e.removeEventListener?e.removeEventListener(t,n,!1):e.detachEvent("on"+t,n)},SVG.extend(SVG.Element,{on:function(e,t){return SVG.on(this.node,e,t),this},off:function(e,t){return SVG.off(this.node,e,t),this}}),SVG.G=function(){this.constructor.call(this,SVG.create("g"))},SVG.G.prototype=new SVG.Container,SVG.extend(SVG.G,{defs:function(){return this.doc().defs()}}),SVG.extend(SVG.Element,{siblings:function(){return this.parent.children()},position:function(){return this.siblings().indexOf(this)},next:function(){return this.siblings()[this.position()+1]},previous:function(){return this.siblings()[this.position()-1]},forward:function(){return this.parent.remove(this).put(this,this.position()+1)},backward:function(){var e;return this.parent.level(),e=this.position(),e>1&&this.parent.remove(this).add(this,e-1),this},front:function(){return this.parent.remove(this).put(this)},back:function(){return this.parent.level(),this.position()>1&&this.parent.remove(this).add(this,0),this}}),SVG.Defs=function(){this.constructor.call(this,SVG.create("defs"))},SVG.Defs.prototype=new SVG.Container,SVG.Mask=function(){this.constructor.call(this,SVG.create("mask")),this.attr("id",this.id="svgjs_element_"+SVG.did++)},SVG.Mask.prototype=new SVG.Container,SVG.extend(SVG.Element,{maskWith:function(e){return this.mask=e instanceof SVG.Mask?e:this.parent.mask().add(e),this.attr("mask","url(#"+this.mask.id+")")}}),SVG.Pattern=function(e){this.constructor.call(this,SVG.create("pattern")),this.attr("id",this.id="svgjs_element_"+SVG.did++)},SVG.Pattern.prototype=new SVG.Container,SVG.extend(SVG.Pattern,{fill:function(){return"url(#"+this.id+")"}}),SVG.extend(SVG.Defs,{pattern:function(e,t,n){var r=this.put(new SVG.Pattern);return n(r),r.attr({x:0,y:0,width:e,height:t,patternUnits:"userSpaceOnUse"})}}),SVG.Gradient=function(e){this.constructor.call(this,SVG.create(e+"Gradient")),this.attr("id",this.id="svgjs_element_"+SVG.did++),this.type=e},SVG.Gradient.prototype=new SVG.Container,SVG.extend(SVG.Gradient,{from:function(e,t){return this.type=="radial"?this.attr({fx:e+"%",fy:t+"%"}):this.attr({x1:e+"%",y1:t+"%"})},to:function(e,t){return this.type=="radial"?this.attr({cx:e+"%",cy:t+"%"}):this.attr({x2:e+"%",y2:t+"%"})},radius:function(e){return this.type=="radial"?this.attr({r:e+"%"}):this},at:function(e){return this.put(new SVG.Stop(e))},update:function(e){while(this.node.hasChildNodes())this.node.removeChild(this.node.lastChild);return e(this),this},fill:function(){return"url(#"+this.id+")"}}),SVG.extend(SVG.Defs,{gradient:function(e,t){var n=this.put(new SVG.Gradient(e));return t(n),n}}),SVG.Stop=function(e){this.constructor.call(this,SVG.create("stop")),this.update(e)},SVG.Stop.prototype=new SVG.Element,SVG.extend(SVG.Stop,{update:function(e){var t,n="",r=["opacity","color"];for(t=r.length-1;t>=0;t--)e[r[t]]!=null&&(n+="stop-"+r[t]+":"+e[r[t]]+";");return this.attr({offset:(e.offset!=null?e.offset:this.attrs.offset||0)+"%",style:n})}}),SVG.Doc=function(e){this.constructor.call(this,SVG.create("svg")),this.parent=typeof e=="string"?document.getElementById(e):e,this.attr({xmlns:SVG.ns,version:"1.1",width:"100%",height:"100%"}).attr("xlink",SVG.xlink,SVG.ns).defs(),this.stage()},SVG.Doc.prototype=new SVG.Container,SVG.Doc.prototype.stage=function(){var e,t=this,n=document.createElement("div");return n.style.cssText="position:relative;height:100%;",t.parent.appendChild(n),n.appendChild(t.node),e=function(){document.readyState==="complete"?(t.attr("style","position:absolute;"),setTimeout(function(){t.attr("style","position:relative;"),t.parent.removeChild(t.node.parentNode),t.node.parentNode.removeChild(t.node),t.parent.appendChild(t.node)},5)):setTimeout(e,10)},e(),this},SVG.Shape=function(e){this.constructor.call(this,e)},SVG.Shape.prototype=new SVG.Element,SVG.Wrap=function(e){this.constructor.call(this,SVG.create("g")),this.node.insertBefore(e.node,null),this.child=e,this.type=e.node.nodeName},SVG.Wrap.prototype=new SVG.Shape,SVG.extend(SVG.Wrap,{move:function(e,t){return this.transform({x:e,y:t})},size:function(e,t){var n=e/this._b.width;return this.child.transform({scaleX:n,scaleY:t!=null?t/this._b.height:n}),this},center:function(e,t){return this.move(e+this._b.width*this.child.trans.scaleX/-2,t+this._b.height*this.child.trans.scaleY/-2)},attr:function(e,t,n){if(typeof e=="object")for(t in e)this.attr(t,e[t]);else{if(arguments.length<2)return e=="transform"?this.attrs[e]:this.child.attrs[e];e=="transform"?(this.attrs[e]=t,n!=null?this.node.setAttributeNS(n,e,t):this.node.setAttribute(e,t)):this.child.attr(e,t,n)}return this},plot:function(e){return this.child.plot(e),this._b=this.child.bbox(),this.child.transform({x:-this._b.x,y:-this._b.y}),this}}),SVG.Rect=function(){this.constructor.call(this,SVG.create("rect"))},SVG.Rect.prototype=new SVG.Shape,SVG.Ellipse=function(){this.constructor.call(this,SVG.create("ellipse"))},SVG.Ellipse.prototype=new SVG.Shape,SVG.extend(SVG.Ellipse,{move:function(e,t){return this.attrs.x=e,this.attrs.y=t,this.center()},size:function(e,t){return this.attr({rx:e/2,ry:(t!=null?t:e)/2}).center()},center:function(e,t){return this.attr({cx:e||(this.attrs.x||0)+(this.attrs.rx||0),cy:t||(this.attrs.y||0)+(this.attrs.ry||0)})}}),SVG.Line=function(){this.constructor.call(this,SVG.create("line"))},SVG.Line.prototype=new SVG.Shape,SVG.extend(SVG.Line,{move:function(e,t){var n=this.bbox();return this.attr({x1:this.attr("x1")-n.x+e,y1:this.attr("y1")-n.y+t,x2:this.attr("x2")-n.x+e,y2:this.attr("y2")-n.y+t})},center:function(e,t){var n=this.bbox();return this.move(e-n.width/2,t-n.height/2)},size:function(e,t){var n=this.bbox();return this.attr(this.attr("x1")<this.attr("x2")?"x2":"x1",n.x+e),this.attr(this.attr("y1")<this.attr("y2")?"y2":"y1",n.y+t)}}),SVG.extend(SVG.Container,{line:function(e,t,n,r){return this.put((new SVG.Line).attr({x1:e,y1:t,x2:n,y2:r}))}}),SVG.Poly={plot:function(e){return this.attr("points",e||"0,0"),this}},SVG.Polyline=function(){this.constructor.call(this,SVG.create("polyline"))},SVG.Polyline.prototype=new SVG.Shape,SVG.extend(SVG.Polyline,SVG.Poly),SVG.Polygon=function(){this.constructor.call(this,SVG.create("polygon"))},SVG.Polygon.prototype=new SVG.Shape,SVG.extend(SVG.Polygon,SVG.Poly),SVG.Path=function(){this.constructor.call(this,SVG.create("path"))},SVG.Path.prototype=new SVG.Shape,SVG.extend(SVG.Path,{move:function(e,t){this.transform({x:e,y:t})},plot:function(e){return this.attr("d",e||"M0,0")}}),SVG.Image=function(){this.constructor.call(this,SVG.create("image"))},SVG.Image.prototype=new SVG.Shape,SVG.extend(SVG.Image,{load:function(e){return this.src=e,e?this.attr("xlink:href",e,SVG.xlink):this}});var e=["size","family","weight","stretch","variant","style"];SVG.Text=function(){this.constructor.call(this,SVG.create("text")),this.style={"font-size":16,"font-family":"Helvetica","text-anchor":"start"},this.leading=1.2},SVG.Text.prototype=new SVG.Shape,SVG.extend(SVG.Text,{text:function(e){this.content=e=e||"text",this.lines=[];var t,n,r,i=this._style(),s=this.doc(),o=e.split("\n"),u=this.style["font-size"];while(this.node.hasChildNodes())this.node.removeChild(this.node.lastChild);for(t=0,n=o.length;t<n;t++)r=(new SVG.TSpan).text(o[t]).attr({dy:u*this.leading-(t==0?u*.3:0),x:this.attrs.x||0,style:i}),this.node.appendChild(r.node),this.lines.push(r);return this.attr("style",i)},_style:function(){var t,n="";for(t=e.length-1;t>=0;t--)this.style["font-"+e[t]]!=null&&(n+="font-"+e[t]+":"+this.style["font-"+e[t]]+";");return n+="text-anchor:"+this.style["text-anchor"]+";",n}}),SVG.TSpan=function(){this.constructor.call(this,SVG.create("tspan"))},SVG.TSpan.prototype=new SVG.Shape,SVG.extend(SVG.TSpan,{text:function(e){return this.node.appendChild(document.createTextNode(e)),this}}),SVG.Nested=function(){this.constructor.call(this,SVG.create("svg")),this.attr("overflow","visible")},SVG.Nested.prototype=new SVG.Container,SVG._stroke=["color","width","opacity","linecap","linejoin","miterlimit","dasharray","dashoffset"],SVG._fill=["color","opacity","rule"];var t=function(e,t){return t=="color"?e:e+"-"+t};["fill","stroke"].forEach(function(e){SVG.Shape.prototype[e]=function(n){var r;if(typeof n=="string")this.attr(e,n);else for(index=SVG["_"+e].length-1;index>=0;index--)n[SVG["_"+e][index]]!=null&&this.attr(t(e,SVG["_"+e][index]),n[SVG["_"+e][index]]);return this}}),[SVG.Element,SVG.FX].forEach(function(e){e&&SVG.extend(e,{rotate:function(e){return this.transform({rotation:e||0})},skew:function(e,t){return this.transform({skewX:e||0,skewY:t||0})},scale:function(e,t){return this.transform({scaleX:e,scaleY:t==null?e:t})},opacity:function(e){return this.attr("opacity",e)}})}),SVG.G&&SVG.extend(SVG.G,{move:function(e,t){return this.transform({x:e,y:t})}}),SVG.Text&&SVG.extend(SVG.Text,{font:function(t){var n,r={};for(n in t)n=="leading"?r[n]=t[n]:n=="anchor"?r["text-anchor"]=t[n]:e.indexOf(n)>-1?r["font-"+n]=t[n]:void 0;return this.attr(r).text(this.content)}})}).call(this);
\ No newline at end of file
+/* svg.js v0.6-8-g7529b96 - svg viewbox bbox element container fx event group arrange defs mask pattern gradient doc shape wrap rect ellipse line poly path image text nested sugar - svgjs.com/license */
+(function(){this.svg=function(e){if(SVG.supported)return new SVG.Doc(e)},this.SVG={ns:"http://www.w3.org/2000/svg",xlink:"http://www.w3.org/1999/xlink",did:0,create:function(e){return document.createElementNS(this.ns,e)},extend:function(e,t){for(var n in t)e.prototype[n]=t[n]}},SVG.supported=function(){return!!document.createElementNS&&!!document.createElementNS(SVG.ns,"svg").createSVGRect}();if(!SVG.supported)return!1;SVG.ViewBox=function(e){var t,n,r,i,s=e.bbox(),o=(e.attr("viewBox")||"").match(/[\d\.]+/g);this.x=s.x,this.y=s.y,this.width=e.node.offsetWidth||e.attr("width"),this.height=e.node.offsetHeight||e.attr("height"),o&&(t=parseFloat(o[0]),n=parseFloat(o[1]),r=parseFloat(o[2])-t,i=parseFloat(o[3])-n,this.zoom=this.width/this.height>r/i?this.height/i:this.width/r,this.x=t,this.y=n,this.width=r,this.height=i),this.zoom=this.zoom||1},SVG.extend(SVG.ViewBox,{toString:function(){return this.x+" "+this.y+" "+this.width+" "+this.height}}),SVG.BBox=function(e){var t=e.node.getBBox();this.x=t.x+e.trans.x,this.y=t.y+e.trans.y,this.cx=t.x+e.trans.x+t.width/2,this.cy=t.y+e.trans.y+t.height/2,this.width=t.width,this.height=t.height},SVG.Element=function(e){if(this.node=e)this.type=e.nodeName;this.attrs={"fill-opacity":1,"stroke-opacity":1,"stroke-width":0,fill:"#000",stroke:"#000",opacity:1,x:0,y:0,cx:0,cy:0,width:0,height:0,r:0,rx:0,ry:0},this.trans={x:0,y:0,scaleX:1,scaleY:1,rotation:0,skewX:0,skewY:0}},SVG.extend(SVG.Element,{move:function(e,t){return this.attr({x:e,y:t})},center:function(e,t){var n=this.bbox();return this.move(e-n.width/2,t-n.height/2)},size:function(e,t){return this.attr({width:e,height:t})},clone:function(){var e;if(this instanceof SVG.Wrap)e=this.parent[this.child.node.nodeName](),e.attrs=this.attrs,e.child.trans=this.child.trans,e.child.attr(this.child.attrs).transform({}),e.plot&&e.plot(this.child.attrs[this.child instanceof SVG.Path?"d":"points"]);else{var t=this.node.nodeName;e=t=="rect"?this.parent[t](this.attrs.width,this.attrs.height):t=="ellipse"?this.parent[t](this.attrs.rx*2,this.attrs.ry*2):t=="image"?this.parent[t](this.src):t=="text"?this.parent[t](this.content):t=="g"?this.parent.group():this.parent[t](),e.attr(this.attrs)}return e.trans=this.trans,e.transform({})},remove:function(){return this.parent!=null?this.parent.remove(this):void 0},doc:function(){return this._parent(SVG.Doc)},nested:function(){return this._parent(SVG.Nested)},attr:function(e,t,n){if(arguments.length<2){if(typeof e!="object")return this._isStyle(e)?e=="text"?this.content:e=="leading"?this[e]:this.style[e]:this.attrs[e];for(t in e)this.attr(t,e[t])}else{this.attrs[e]=t;if(e=="x"&&this._isText())for(var r=this.lines.length-1;r>=0;r--)this.lines[r].attr(e,t);else n!=null?this.node.setAttributeNS(n,e,t):this.node.setAttribute(e,t);this._isStyle(e)&&(e=="text"?this.text(t):e=="leading"?this[e]=t:this.style[e]=t,this.text(this.content))}return this},transform:function(e){if(typeof e=="string")return this.trans[e];var t,n=[];for(t in e)e[t]!=null&&(this.trans[t]=e[t]);e=this.trans;if(e.rotation!=0){var r=this.bbox();n.push("rotate("+e.rotation+","+(e.cx!=null?e.cx:r.cx)+","+(e.cy!=null?e.cy:r.cy)+")")}return n.push("scale("+e.scaleX+","+e.scaleY+")"),e.skewX!=0&&n.push("skewX("+e.skewX+")"),e.skewY!=0&&n.push("skewY("+e.skewY+")"),n.push("translate("+e.x+","+e.y+")"),this.attr("transform",n.join(" "))},data:function(e,t,n){if(arguments.length<2)try{return JSON.parse(this.attr("data-"+e))}catch(r){return this.attr("data-"+e)}else t===null?this.node.removeAttribute("data-"+e):this.attr("data-"+e,n===!0?t:JSON.stringify(t));return this},bbox:function(){return new SVG.BBox(this)},inside:function(e,t){var n=this.bbox();return e>n.x&&t>n.y&&e<n.x+n.width&&t<n.y+n.height},show:function(){return this.node.style.display="",this},hide:function(){return this.node.style.display="none",this},visible:function(){return this.node.style.display!="none"},_parent:function(e){var t=this;while(t!=null&&!(t instanceof e))t=t.parent;return t},_isStyle:function(e){return typeof e=="string"&&this._isText()?/^font|text|leading/.test(e):!1},_isText:function(){return this instanceof SVG.Text}}),SVG.Container=function(e){this.constructor.call(this,e)},SVG.Container.prototype=new SVG.Element,SVG.extend(SVG.Container,{add:function(e,t){return this.has(e)||(t=t==null?this.children().length:t,this.children().splice(t,0,e),this.node.insertBefore(e.node,this.node.childNodes[t]||null),e.parent=this),this},put:function(e,t){return this.add(e,t),e},has:function(e){return this.children().indexOf(e)>=0},children:function(){return this._children||(this._children=[])},each:function(e){var t,n=this.children();for(t=0,length=n.length;t<length;t++)n[t]instanceof SVG.Shape&&e.apply(n[t],[t,n]);return this},remove:function(e){return this.removeAt(this.children().indexOf(e))},removeAt:function(e){if(0<=e&&e<this.children().length){var t=this.children()[e];this.children().splice(e,1),this.node.removeChild(t.node),t.parent=null}return this},defs:function(){return this._defs||(this._defs=this.put(new SVG.Defs,0))},level:function(){return this.remove(this.defs()).put(this.defs(),0)},group:function(){return this.put(new SVG.G)},rect:function(e,t){return this.put((new SVG.Rect).size(e,t))},circle:function(e){return this.ellipse(e)},ellipse:function(e,t){return this.put((new SVG.Ellipse).size(e,t))},polyline:function(e){return this.put(new SVG.Wrap(new SVG.Polyline)).plot(e)},polygon:function(e){return this.put(new SVG.Wrap(new SVG.Polygon)).plot(e)},path:function(e){return this.put(new SVG.Wrap(new SVG.Path)).plot(e)},image:function(e,t,n){return t=t!=null?t:100,this.put((new SVG.Image).load(e).size(t,n!=null?n:t))},text:function(e){return this.put((new SVG.Text).text(e))},nested:function(){return this.put(new SVG.Nested)},gradient:function(e,t){return this.defs().gradient(e,t)},pattern:function(e,t,n){return this.defs().pattern(e,t,n)},mask:function(){return this.defs().put(new SVG.Mask)},first:function(){return this.children()[0]instanceof SVG.Defs?this.children()[1]:this.children()[0]},last:function(){return this.children()[this.children().length-1]},viewbox:function(){return arguments.length==0?new SVG.ViewBox(this):this.attr("viewBox",Array.prototype.slice.call(arguments).join(" "))},clear:function(){this._children=[];while(this.node.hasChildNodes())this.node.removeChild(this.node.lastChild);return this}}),SVG.FX=function(e){this.target=e},SVG.extend(SVG.FX,{animate:function(e,t){e=e==null?1e3:e,t=t||"<>";var n,r,i,s=this.target,o=this,u=(new Date).getTime(),a=u+e;return this.interval=setInterval(function(){var f,l=(new Date).getTime(),c=l>a?1:(l-u)/e;if(n==null){n=[];for(var h in o.attrs)n.push(h)}if(r==null){r=[];for(var h in o.trans)r.push(h);i={}}c=t=="<>"?-Math.cos(c*Math.PI)/2+.5:t==">"?Math.sin(c*Math.PI/2):t=="<"?-Math.cos(c*Math.PI/2)+1:t=="-"?c:typeof t=="function"?t(c):c,o._move?s.move(o._at(o._move.x,c),o._at(o._move.y,c)):o._center&&s.move(o._at(o._center.x,c),o._at(o._center.y,c)),o._size&&s.size(o._at(o._size.width,c),o._at(o._size.height,c));for(f=n.length-1;f>=0;f--)s.attr(n[f],o._at(o.attrs[n[f]],c));if(r.length>0){for(f=r.length-1;f>=0;f--)i[r[f]]=o._at(o.trans[r[f]],c);s.transform(i)}l>a&&(clearInterval(o.interval),o._after?o._after.apply(s,[o]):o.stop())},e>10?10:e),this},attr:function(e,t,n){if(typeof e=="object")for(var r in e)this.attr(r,e[r]);else this.attrs[e]={from:this.target.attr(e),to:t};return this},transform:function(e){for(var t in e)this.trans[t]={from:this.target.trans[t],to:e[t]};return this},move:function(e,t){var n=this.target.bbox();return this._move={x:{from:n.x,to:e},y:{from:n.y,to:t}},this},size:function(e,t){var n=this.target.bbox();return this._size={width:{from:n.width,to:e},height:{from:n.height,to:t}},this},center:function(e,t){var n=this.target.bbox();return this._move={x:{from:n.cx,to:e},y:{from:n.cy,to:t}},this},after:function(e){return this._after=e,this},stop:function(){return clearInterval(this.interval),this.attrs={},this.trans={},this._move=null,this._size=null,this._after=null,this},_at:function(e,t){return typeof e.from=="number"?e.from+(e.to-e.from)*t:e.to.r||/^#/.test(e.to)?this._color(e,t):t<1?e.from:e.to},_color:function(e,t){var n,r;return n=this._h2r(e.from||"#000"),r=this._h2r(e.to),this._r2h({r:~~(n.r+(r.r-n.r)*t),g:~~(n.g+(r.g-n.g)*t),b:~~(n.b+(r.b-n.b)*t)})},_h2r:function(e){var t=/^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(this._fh(e));return t?{r:parseInt(t[1],16),g:parseInt(t[2],16),b:parseInt(t[3],16)}:{r:0,g:0,b:0}},_r2h:function(e){return"#"+this._c2h(e.r)+this._c2h(e.g)+this._c2h(e.b)},_c2h:function(e){var t=e.toString(16);return t.length==1?"0"+t:t},_fh:function(e){return e.length==4?["#",e.substring(1,2),e.substring(1,2),e.substring(2,3),e.substring(2,3),e.substring(3,4),e.substring(3,4)].join(""):e}}),SVG.extend(SVG.Element,{animate:function(e,t){return(this.fx||(this.fx=new SVG.FX(this))).stop().animate(e,t)},stop:function(){return this.fx.stop(),this}}),["click","dblclick","mousedown","mouseup","mouseover","mouseout","mousemove","mouseenter","mouseleave","touchstart","touchend","touchmove","touchcancel"].forEach(function(e){SVG.Element.prototype[e]=function(t){var n=this;return this.node["on"+e]=typeof t=="function"?function(){return t.apply(n,arguments)}:null,this}}),SVG.on=function(e,t,n){e.addEventListener?e.addEventListener(t,n,!1):e.attachEvent("on"+t,n)},SVG.off=function(e,t,n){e.removeEventListener?e.removeEventListener(t,n,!1):e.detachEvent("on"+t,n)},SVG.extend(SVG.Element,{on:function(e,t){return SVG.on(this.node,e,t),this},off:function(e,t){return SVG.off(this.node,e,t),this}}),SVG.G=function(){this.constructor.call(this,SVG.create("g"))},SVG.G.prototype=new SVG.Container,SVG.extend(SVG.G,{defs:function(){return this.doc().defs()}}),SVG.extend(SVG.Element,{siblings:function(){return this.parent.children()},position:function(){return this.siblings().indexOf(this)},next:function(){return this.siblings()[this.position()+1]},previous:function(){return this.siblings()[this.position()-1]},forward:function(){return this.parent.remove(this).put(this,this.position()+1)},backward:function(){var e;return this.parent.level(),e=this.position(),e>1&&this.parent.remove(this).add(this,e-1),this},front:function(){return this.parent.remove(this).put(this)},back:function(){return this.parent.level(),this.position()>1&&this.parent.remove(this).add(this,0),this}}),SVG.Defs=function(){this.constructor.call(this,SVG.create("defs"))},SVG.Defs.prototype=new SVG.Container,SVG.Mask=function(){this.constructor.call(this,SVG.create("mask")),this.attr("id",this.id="svgjs_element_"+SVG.did++)},SVG.Mask.prototype=new SVG.Container,SVG.extend(SVG.Element,{maskWith:function(e){return this.mask=e instanceof SVG.Mask?e:this.parent.mask().add(e),this.attr("mask","url(#"+this.mask.id+")")}}),SVG.Pattern=function(e){this.constructor.call(this,SVG.create("pattern")),this.attr("id",this.id="svgjs_element_"+SVG.did++)},SVG.Pattern.prototype=new SVG.Container,SVG.extend(SVG.Pattern,{fill:function(){return"url(#"+this.id+")"}}),SVG.extend(SVG.Defs,{pattern:function(e,t,n){var r=this.put(new SVG.Pattern);return n(r),r.attr({x:0,y:0,width:e,height:t,patternUnits:"userSpaceOnUse"})}}),SVG.Gradient=function(e){this.constructor.call(this,SVG.create(e+"Gradient")),this.attr("id",this.id="svgjs_element_"+SVG.did++),this.type=e},SVG.Gradient.prototype=new SVG.Container,SVG.extend(SVG.Gradient,{from:function(e,t){return this.type=="radial"?this.attr({fx:e+"%",fy:t+"%"}):this.attr({x1:e+"%",y1:t+"%"})},to:function(e,t){return this.type=="radial"?this.attr({cx:e+"%",cy:t+"%"}):this.attr({x2:e+"%",y2:t+"%"})},radius:function(e){return this.type=="radial"?this.attr({r:e+"%"}):this},at:function(e){return this.put(new SVG.Stop(e))},update:function(e){while(this.node.hasChildNodes())this.node.removeChild(this.node.lastChild);return e(this),this},fill:function(){return"url(#"+this.id+")"}}),SVG.extend(SVG.Defs,{gradient:function(e,t){var n=this.put(new SVG.Gradient(e));return t(n),n}}),SVG.Stop=function(e){this.constructor.call(this,SVG.create("stop")),this.update(e)},SVG.Stop.prototype=new SVG.Element,SVG.extend(SVG.Stop,{update:function(e){var t,n="",r=["opacity","color"];for(t=r.length-1;t>=0;t--)e[r[t]]!=null&&(n+="stop-"+r[t]+":"+e[r[t]]+";");return this.attr({offset:(e.offset!=null?e.offset:this.attrs.offset||0)+"%",style:n})}}),SVG.Doc=function(e){this.constructor.call(this,SVG.create("svg")),this.parent=typeof e=="string"?document.getElementById(e):e,this.attr({xmlns:SVG.ns,version:"1.1",width:"100%",height:"100%"}).attr("xlink",SVG.xlink,SVG.ns).defs(),this.stage()},SVG.Doc.prototype=new SVG.Container,SVG.Doc.prototype.stage=function(){var e,t=this,n=document.createElement("div");return n.style.cssText="position:relative;height:100%;",t.parent.appendChild(n),n.appendChild(t.node),e=function(){document.readyState==="complete"?(t.attr("style","position:absolute;"),setTimeout(function(){t.attr("style","position:relative;"),t.parent.removeChild(t.node.parentNode),t.node.parentNode.removeChild(t.node),t.parent.appendChild(t.node)},5)):setTimeout(e,10)},e(),this},SVG.Shape=function(e){this.constructor.call(this,e)},SVG.Shape.prototype=new SVG.Element,SVG.Wrap=function(e){this.constructor.call(this,SVG.create("g")),this.node.insertBefore(e.node,null),this.child=e,this.type=e.node.nodeName},SVG.Wrap.prototype=new SVG.Shape,SVG.extend(SVG.Wrap,{move:function(e,t){return this.transform({x:e,y:t})},size:function(e,t){var n=e/this._b.width;return this.child.transform({scaleX:n,scaleY:t!=null?t/this._b.height:n}),this},center:function(e,t){return this.move(e+this._b.width*this.child.trans.scaleX/-2,t+this._b.height*this.child.trans.scaleY/-2)},attr:function(e,t,n){if(typeof e=="object")for(t in e)this.attr(t,e[t]);else{if(arguments.length<2)return e=="transform"?this.attrs[e]:this.child.attrs[e];e=="transform"?(this.attrs[e]=t,n!=null?this.node.setAttributeNS(n,e,t):this.node.setAttribute(e,t)):this.child.attr(e,t,n)}return this},plot:function(e){return this.child.plot(e),this._b=this.child.bbox(),this.child.transform({x:-this._b.x,y:-this._b.y}),this}}),SVG.Rect=function(){this.constructor.call(this,SVG.create("rect"))},SVG.Rect.prototype=new SVG.Shape,SVG.Ellipse=function(){this.constructor.call(this,SVG.create("ellipse"))},SVG.Ellipse.prototype=new SVG.Shape,SVG.extend(SVG.Ellipse,{move:function(e,t){return this.attrs.x=e,this.attrs.y=t,this.center()},size:function(e,t){return this.attr({rx:e/2,ry:(t!=null?t:e)/2}).center()},center:function(e,t){return this.attr({cx:e||(this.attrs.x||0)+(this.attrs.rx||0),cy:t||(this.attrs.y||0)+(this.attrs.ry||0)})}}),SVG.Line=function(){this.constructor.call(this,SVG.create("line"))},SVG.Line.prototype=new SVG.Shape,SVG.extend(SVG.Line,{move:function(e,t){var n=this.bbox();return this.attr({x1:this.attr("x1")-n.x+e,y1:this.attr("y1")-n.y+t,x2:this.attr("x2")-n.x+e,y2:this.attr("y2")-n.y+t})},center:function(e,t){var n=this.bbox();return this.move(e-n.width/2,t-n.height/2)},size:function(e,t){var n=this.bbox();return this.attr(this.attr("x1")<this.attr("x2")?"x2":"x1",n.x+e),this.attr(this.attr("y1")<this.attr("y2")?"y2":"y1",n.y+t)}}),SVG.extend(SVG.Container,{line:function(e,t,n,r){return this.put((new SVG.Line).attr({x1:e,y1:t,x2:n,y2:r}))}}),SVG.Poly={plot:function(e){return this.attr("points",e||"0,0"),this}},SVG.Polyline=function(){this.constructor.call(this,SVG.create("polyline"))},SVG.Polyline.prototype=new SVG.Shape,SVG.extend(SVG.Polyline,SVG.Poly),SVG.Polygon=function(){this.constructor.call(this,SVG.create("polygon"))},SVG.Polygon.prototype=new SVG.Shape,SVG.extend(SVG.Polygon,SVG.Poly),SVG.Path=function(){this.constructor.call(this,SVG.create("path"))},SVG.Path.prototype=new SVG.Shape,SVG.extend(SVG.Path,{move:function(e,t){this.transform({x:e,y:t})},plot:function(e){return this.attr("d",e||"M0,0")}}),SVG.Image=function(){this.constructor.call(this,SVG.create("image"))},SVG.Image.prototype=new SVG.Shape,SVG.extend(SVG.Image,{load:function(e){return this.src=e,e?this.attr("xlink:href",e,SVG.xlink):this}});var e=["size","family","weight","stretch","variant","style"];SVG.Text=function(){this.constructor.call(this,SVG.create("text")),this.style={"font-size":16,"font-family":"Helvetica","text-anchor":"start"},this.leading=1.2},SVG.Text.prototype=new SVG.Shape,SVG.extend(SVG.Text,{text:function(e){this.content=e=e||"text",this.lines=[];var t,n,r,i=this._style(),s=this.doc(),o=e.split("\n"),u=this.style["font-size"];while(this.node.hasChildNodes())this.node.removeChild(this.node.lastChild);for(t=0,n=o.length;t<n;t++)r=(new SVG.TSpan).text(o[t]).attr({dy:u*this.leading-(t==0?u*.3:0),x:this.attrs.x||0,style:i}),this.node.appendChild(r.node),this.lines.push(r);return this.attr("style",i)},_style:function(){var t,n="";for(t=e.length-1;t>=0;t--)this.style["font-"+e[t]]!=null&&(n+="font-"+e[t]+":"+this.style["font-"+e[t]]+";");return n+="text-anchor:"+this.style["text-anchor"]+";",n}}),SVG.TSpan=function(){this.constructor.call(this,SVG.create("tspan"))},SVG.TSpan.prototype=new SVG.Shape,SVG.extend(SVG.TSpan,{text:function(e){return this.node.appendChild(document.createTextNode(e)),this}}),SVG.Nested=function(){this.constructor.call(this,SVG.create("svg")),this.attr("overflow","visible")},SVG.Nested.prototype=new SVG.Container,SVG._stroke=["color","width","opacity","linecap","linejoin","miterlimit","dasharray","dashoffset"],SVG._fill=["color","opacity","rule"];var t=function(e,t){return t=="color"?e:e+"-"+t};["fill","stroke"].forEach(function(e){SVG.Shape.prototype[e]=function(n){var r;if(typeof n=="string")this.attr(e,n);else for(index=SVG["_"+e].length-1;index>=0;index--)n[SVG["_"+e][index]]!=null&&this.attr(t(e,SVG["_"+e][index]),n[SVG["_"+e][index]]);return this}}),[SVG.Element,SVG.FX].forEach(function(e){e&&SVG.extend(e,{rotate:function(e){return this.transform({rotation:e||0})},skew:function(e,t){return this.transform({skewX:e||0,skewY:t||0})},scale:function(e,t){return this.transform({scaleX:e,scaleY:t==null?e:t})},opacity:function(e){return this.attr("opacity",e)}})}),SVG.G&&SVG.extend(SVG.G,{move:function(e,t){return this.transform({x:e,y:t})}}),SVG.Text&&SVG.extend(SVG.Text,{font:function(t){var n,r={};for(n in t)n=="leading"?r[n]=t[n]:n=="anchor"?r["text-anchor"]=t[n]:e.indexOf(n)>-1?r["font-"+n]=t[n]:void 0;return this.attr(r).text(this.content)}})}).call(this);
\ No newline at end of file
diff --git a/src/viewbox.js b/src/viewbox.js
index f40a76e..05fb15e 100644
--- a/src/viewbox.js
+++ b/src/viewbox.js
@@ -32,4 +32,12 @@ SVG.ViewBox = function(element) {
   /* ensure a default zoom value */
   this.zoom = this.zoom || 1
   
-}
\ No newline at end of file
+}
+
+SVG.extend(SVG.ViewBox, {
+  // Parse viewbox to string
+  toString: function() {
+    return this.x + ' ' + this.y + ' ' + this.width + ' ' + this.height
+  }
+  
+})
\ No newline at end of file