prefix all `url()` references with current location (#568)

the prefix is removed on export and added on import

15 files changed, 97 insertions, 22 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ade31af..91daed9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -38,6 +38,7 @@ The document follows the conventions described in [“Keep a CHANGELOG”](http:
 - new constructor signature for `SVG.Image` and `load()`: `container.image(src, callback) / image.load(src, callback)`
 - changed `style()` to `css()`. Now accepts array as input and returns object when no argument given (#517)
 - ids are not generated upon creation anymore. Instead they are generated when requested (#559)
+- prefix all `url()` references with current location so that nothing breaks when using `<base>`
 
 ### Fixed
 - fixed a bug in clipping and masking where empty nodes persists after removal -> __TODO!__
diff --git a/dist/svg.js b/dist/svg.js
index e81cdd6..3aaea2a 100644
--- a/dist/svg.js
+++ b/dist/svg.js
@@ -6,7 +6,7 @@
 * @copyright Wout Fierens <wout@mick-wout.com>
 * @license MIT
 *
-* BUILT: Sun Apr 23 2017 12:52:05 GMT+0200 (Mitteleuropäische Sommerzeit)
+* BUILT: Sun Apr 23 2017 15:09:13 GMT+0200 (Mitteleuropäische Sommerzeit)
 */;
 (function(root, factory) {

   /* istanbul ignore next */

@@ -212,6 +212,9 @@ SVG.regex = {
   // Test for image url

 , isImage:          /\.(jpg|jpeg|png|gif|svg)(\?[^=]+.*)?/i

 

+  // Test for url reference

+, isUrl:            /url\(([-\w:/]+(?:\.\w+)?)?#([-\w]+)\)/

+

   // split at whitespace and comma

 , delimiter:        /[\s,]+/

 

@@ -1232,6 +1235,8 @@ SVG.Element = SVG.invent({
         // dump raw svg

         well.innerHTML = svg

 

+        addPrefixToReferences(well)

+

         // transplant nodes

         for (len = well.childNodes.length;len--;)

           if(well.firstChild.nodeType != 1)

@@ -1241,6 +1246,7 @@ SVG.Element = SVG.invent({
 

       // otherwise act as a getter

       } else {

+        removePrefixFromReferences(this.node)

         return this.node.outerHTML

       }

 

@@ -3374,7 +3380,7 @@ SVG.extend(SVG.Element, {
     var masker = element instanceof SVG.Mask ? element : this.parent().mask().add(element)

 

     // apply mask

-    return this.attr('mask', 'url("#' + masker.id() + '")')

+    return this.attr('mask', url(masker))

   }

   // Unmask element

 , unmask: function() {

@@ -3427,7 +3433,7 @@ SVG.extend(SVG.Element, {
     var clipper = element instanceof SVG.ClipPath ? element : this.parent().clip().add(element)

 

     // apply mask

-    return this.attr('clip-path', 'url("#' + clipper.id() + '")')

+    return this.attr('clip-path', url(clipper))

   }

   // Unclip element

 , unclip: function() {

@@ -3466,7 +3472,7 @@ SVG.Gradient = SVG.invent({
     }

     // Return the fill id

   , fill: function() {

-      return 'url(#' + this.id() + ')'

+      return url(this)

     }

     // Alias string convertion to fill

   , toString: function() {

@@ -3554,7 +3560,7 @@ SVG.Pattern = SVG.invent({
 , extend: {

     // Return the fill id

     fill: function() {

-      return 'url(#' + this.id() + ')'

+      return url(this)

     }

     // Update pattern by rebuilding

   , update: function(block) {

@@ -4526,7 +4532,7 @@ SVG.Marker = SVG.invent({
     }

     // Return the fill id

   , toString: function() {

-      return 'url(#' + this.id() + ')'

+      return url(this)

     }

   }

 

@@ -4972,6 +4978,37 @@ function idFromReference(url) {
   if (m) return m[1]

 }

 

+// creates an url reference out of nodes id

+function url(node) {

+  return 'url(' + window.location + '#' + node.id() + ')'

+}

+

+function removePrefixFromReferences(node) {

+  for (var i = node.childNodes.length - 1; i >= 0; i--)

+    if (node.childNodes[i] instanceof window.SVGElement)

+      removePrefixFromReferences(node.childNodes[i])

+

+  var v = node.attributes, match

+  for (n = v.length - 1; n >= 0; n--) {

+    if(match = SVG.regex.isUrl.exec(v[n].nodeValue)) {

+      if(match[1] == window.location) v[n].nodeValue = 'url(#' + match[2] + ')'

+    }

+  }

+}

+

+function addPrefixToReferences(node) {

+  for (var i = node.childNodes.length - 1; i >= 0; i--)

+    if (node.childNodes[i] instanceof window.SVGElement)

+      addPrefixToReferences(node.childNodes[i])

+

+  var v = node.attributes, match

+  for (n = v.length - 1; n >= 0; n--) {

+    if(match = SVG.regex.isUrl.exec(v[n].nodeValue)) {

+      if(!match[1]) v[n].nodeValue = 'url(' + window.location + '#' + match[2] + ')'

+    }

+  }

+}

+

 // Create matrix array for looping

 var abcdef = 'abcdef'.split('')

 
diff --git a/dist/svg.min.js b/dist/svg.min.js
index b4af23d..388bc67 100644
--- a/dist/svg.min.js
+++ b/dist/svg.min.js
@@ -1,2 +1,2 @@
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b.ClipPath?t:this.parent().clip().add(t);return this.attr("clip-path",'url("#'+e.id()+'")')},unclip:function(){return this.attr("clip-path",null)},clipper:function(){return this.reference("clip-path")}}),b.Gradient=b.invent({create:function(t){this.constructor.call(this,b.create(t+"Gradient"))},inherit:b.Container,extend:{at:function(t,e,n){return this.put(new b.Stop).update(t,e,n)},update:function(t){return this.clear(),"function"==typeof t&&t.call(this,this),this},fill:function(){return"url(#"+this.id()+")"},toString:function(){return this.fill()},attr:function(t,e,n){return"transform"==t&&(t="gradientTransform"),b.Container.prototype.attr.call(this,t,e,n)}},construct:{gradient:function(t,e){return this.defs().gradient(t,e)}}}),b.extend(b.Gradient,b.FX,{from:function(t,e){return"radialGradient"==(this._target||this).type?this.attr({fx:new b.Number(t),fy:new b.Number(e)}):this.attr({x1:new b.Number(t),y1:new b.Number(e)})},to:function(t,e){return"radialGradient"==(this._target||this).type?this.attr({cx:new b.Number(t),cy:new b.Number(e)}):this.attr({x2:new b.Number(t),y2:new b.Number(e)})}}),b.extend(b.Defs,{gradient:function(t,e){return this.put(new b.Gradient(t)).update(e)}}),b.Stop=b.invent({create:"stop",inherit:b.Element,extend:{update:function(t){return("number"==typeof t||t instanceof b.Number)&&(t={offset:arguments[0],color:arguments[1],opacity:arguments[2]}),null!=t.opacity&&this.attr("stop-opacity",t.opacity),null!=t.color&&this.attr("stop-color",t.color),null!=t.offset&&this.attr("offset",new b.Number(t.offset)),this}}}),b.Pattern=b.invent({create:"pattern",inherit:b.Container,extend:{fill:function(){return"url(#"+this.id()+")"},update:function(t){return this.clear(),"function"==typeof t&&t.call(this,this),this},toString:function(){return 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this.update({offset:arguments[0],color:arguments[1],opacity:arguments[2]});null!=t.opacity&&this.attr("stop-opacity",t.opacity),null!=t.color&&this.attr("stop-color",t.color),null!=t.offset&&this.attr("offset",t.offset)}return this}}),M.Matrix=M.invent({create:function(t){var e,n=x([1,0,0,1,0,0]);for(t=t instanceof M.Element?t.matrixify():"string"==typeof t?x(t.split(M.regex.delimiter).map(parseFloat)):6==arguments.length?x([].slice.call(arguments)):Array.isArray(t)?x(t):"object"==typeof t?t:n,e=_.length-1;e>=0;--e)this[_[e]]=t&&"number"==typeof t[_[e]]?t[_[e]]:n[_[e]]},extend:{extract:function(){var t=p(this,0,1),e=p(this,1,0),n=180/Math.PI*Math.atan2(t.y,t.x)-90;return{x:this.e,y:this.f,transformedX:(this.e*Math.cos(n*Math.PI/180)+this.f*Math.sin(n*Math.PI/180))/Math.sqrt(this.a*this.a+this.b*this.b),transformedY:(this.f*Math.cos(n*Math.PI/180)+this.e*Math.sin(-n*Math.PI/180))/Math.sqrt(this.c*this.c+this.d*this.d),skewX:-n,skewY:180/Math.PI*Math.atan2(e.y,e.x),scaleX:Math.sqrt(this.a*this.a+this.b*this.b),scaleY:Math.sqrt(this.c*this.c+this.d*this.d),rotation:n,a:this.a,b:this.b,c:this.c,d:this.d,e:this.e,f:this.f,matrix:new M.Matrix(this)}},clone:function(){return new M.Matrix(this)},morph:function(t){return this.destination=new M.Matrix(t),this},at:function(t){if(!this.destination)return this;var e=new M.Matrix({a:this.a+(this.destination.a-this.a)*t,b:this.b+(this.destination.b-this.b)*t,c:this.c+(this.destination.c-this.c)*t,d:this.d+(this.destination.d-this.d)*t,e:this.e+(this.destination.e-this.e)*t,f:this.f+(this.destination.f-this.f)*t});return e},multiply:function(t){return new M.Matrix(this.native().multiply(m(t).native()))},inverse:function(){return new M.Matrix(this.native().inverse())},translate:function(t,e){return new M.Matrix(this.native().translate(t||0,e||0))},scale:function(t,e,n,i){return 1==arguments.length?e=t:3==arguments.length&&(i=n,n=e,e=t),this.around(n,i,new M.Matrix(t,0,0,e,0,0))},rotate:function(t,e,n){return t=M.utils.radians(t),this.around(e,n,new M.Matrix(Math.cos(t),Math.sin(t),-Math.sin(t),Math.cos(t),0,0))},flip:function(t,e){return"x"==t?this.scale(-1,1,e,0):"y"==t?this.scale(1,-1,0,e):this.scale(-1,-1,t,null!=e?e:t)},skew:function(t,e,n,i){return 1==arguments.length?e=t:3==arguments.length&&(i=n,n=e,e=t),t=M.utils.radians(t),e=M.utils.radians(e),this.around(n,i,new M.Matrix(1,Math.tan(e),Math.tan(t),1,0,0))},skewX:function(t,e,n){return this.skew(t,0,e,n)},skewY:function(t,e,n){return this.skew(0,t,e,n)},around:function(t,e,n){return this.multiply(new M.Matrix(1,0,0,1,t||0,e||0)).multiply(n).multiply(new M.Matrix(1,0,0,1,-t||0,-e||0))},native:function(){for(var t=M.parser.native.createSVGMatrix(),e=_.length-1;e>=0;e--)t[_[e]]=this[_[e]];return t},toString:function(){return"matrix("+this.a+","+this.b+","+this.c+","+this.d+","+this.e+","+this.f+")"}},parent:M.Element,construct:{ctm:function(){return new M.Matrix(this.node.getCTM())},screenCTM:function(){if(this instanceof M.Nested){var t=this.rect(1,1),e=t.node.getScreenCTM();return t.remove(),new M.Matrix(e)}return new M.Matrix(this.node.getScreenCTM())}}}),M.Point=M.invent({create:function(t,e){var n,i={x:0,y:0};n=Array.isArray(t)?{x:t[0],y:t[1]}:"object"==typeof t?{x:t.x,y:t.y}:null!=t?{x:t,y:null!=e?e:t}:i,this.x=n.x,this.y=n.y},extend:{clone:function(){return new M.Point(this)},morph:function(t,e){return this.destination=new M.Point(t,e),this},at:function(t){if(!this.destination)return this;var e=new 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M.Matrix).skew(s.skewX,s.skewY,t.cx,t.cy).inverse())}n=n.skew(t.skewX,t.skewY,t.cx,t.cy)}else t.flip?("x"==t.flip||"y"==t.flip?t.offset=null==t.offset?r.bbox()["c"+t.flip]:t.offset:null==t.offset?(i=r.bbox(),t.flip=i.cx,t.offset=i.cy):t.flip=t.offset,n=(new M.Matrix).flip(t.flip,t.offset)):null==t.x&&null==t.y||(e?n=n.translate(t.x,t.y):(null!=t.x&&(n.e=t.x),null!=t.y&&(n.f=t.y)));return this.attr("transform",n)}}),M.extend(M.FX,{transform:function(t,e){var n,i,r=this.target();return"object"!=typeof t?(n=new M.Matrix(r).extract(),"string"==typeof t?n[t]:n):(e=!!e||!!t.relative,null!=t.a?n=new M.Matrix(t):null!=t.rotation?(y(t,r),n=new M.Rotate(t.rotation,t.cx,t.cy)):null!=t.scale||null!=t.scaleX||null!=t.scaleY?(y(t,r),t.scaleX=null!=t.scale?t.scale:null!=t.scaleX?t.scaleX:1,t.scaleY=null!=t.scale?t.scale:null!=t.scaleY?t.scaleY:1,n=new M.Scale(t.scaleX,t.scaleY,t.cx,t.cy)):null!=t.skewX||null!=t.skewY?(y(t,r),t.skewX=null!=t.skewX?t.skewX:0,t.skewY=null!=t.skewY?t.skewY:0,n=new M.Skew(t.skewX,t.skewY,t.cx,t.cy)):t.flip?("x"==t.flip||"y"==t.flip?t.offset=null==t.offset?r.bbox()["c"+t.flip]:t.offset:null==t.offset?(i=r.bbox(),t.flip=i.cx,t.offset=i.cy):t.flip=t.offset,n=(new M.Matrix).flip(t.flip,t.offset)):null==t.x&&null==t.y||(n=new M.Translate(t.x,t.y)),n?(n.relative=e,this.last().transforms.push(n),this._callStart()):this)}}),M.extend(M.Element,{untransform:function(){return this.attr("transform",null)},matrixify:function(){var t=(this.attr("transform")||"").split(M.regex.transforms).slice(0,-1).map(function(t){var e=t.trim().split("(");return[e[0],e[1].split(M.regex.delimiter).map(function(t){return parseFloat(t)})]}).reduce(function(t,e){return"matrix"==e[0]?t.multiply(x(e[1])):t[e[0]].apply(t,e[1])},new M.Matrix);return t},toParent:function(t){if(this==t)return this;var e=this.screenCTM(),n=t.screenCTM().inverse();return this.addTo(t).untransform().transform(n.multiply(e)),this},toDoc:function(){return this.toParent(this.doc())}}),M.Transformation=M.invent({create:function(t,e){if(arguments.length>1&&"boolean"!=typeof e)return this.constructor.call(this,[].slice.call(arguments));if(Array.isArray(t))for(var n=0,i=this.arguments.length;n<i;++n)this[this.arguments[n]]=t[n];else if("object"==typeof t)for(var n=0,i=this.arguments.length;n<i;++n)this[this.arguments[n]]=t[this.arguments[n]];this.inversed=!1,e===!0&&(this.inversed=!0)},extend:{arguments:[],method:"",at:function(t){for(var e=[],n=0,i=this.arguments.length;n<i;++n)e.push(this[this.arguments[n]]);var r=this._undo||new M.Matrix;return r=(new M.Matrix).morph(M.Matrix.prototype[this.method].apply(r,e)).at(t),this.inversed?r.inverse():r},undo:function(t){for(var e=0,n=this.arguments.length;e<n;++e)t[this.arguments[e]]="undefined"==typeof this[this.arguments[e]]?0:t[this.arguments[e]];return t.cx=this.cx,t.cy=this.cy,this._undo=new(M[l(this.method)])(t,!0).at(1),this}}}),M.Translate=M.invent({parent:M.Matrix,inherit:M.Transformation,create:function(t,e){this.constructor.apply(this,[].slice.call(arguments))},extend:{arguments:["transformedX","transformedY"],method:"translate"}}),M.Rotate=M.invent({parent:M.Matrix,inherit:M.Transformation,create:function(t,e){this.constructor.apply(this,[].slice.call(arguments))},extend:{arguments:["rotation","cx","cy"],method:"rotate",at:function(t){var e=(new M.Matrix).rotate((new M.Number).morph(this.rotation-(this._undo?this._undo.rotation:0)).at(t),this.cx,this.cy);return this.inversed?e.inverse():e},undo:function(t){return this._undo=t,this}}}),M.Scale=M.invent({parent:M.Matrix,inherit:M.Transformation,create:function(t,e){this.constructor.apply(this,[].slice.call(arguments))},extend:{arguments:["scaleX","scaleY","cx","cy"],method:"scale"}}),M.Skew=M.invent({parent:M.Matrix,inherit:M.Transformation,create:function(t,e){this.constructor.apply(this,[].slice.call(arguments))},extend:{arguments:["skewX","skewY","cx","cy"],method:"skew"}}),M.extend(M.Element,{css:function(t,e){var n,i,r={};if(0==arguments.length)return this.node.style.cssText.split(/\s*;\s*/).filter(function(t){return!!t.length}).forEach(function(t){n=t.split(/\s*:\s*/),r[n[0]]=n[1]}),r;if(arguments.length<2){if(Array.isArray(t)){for(i=t.length;i--;)r[u(t[i])]=this.node.style[u(t[i])];return r}if("string"==typeof t)return this.node.style[u(t)];if("object"==typeof t)for(i in t)this.node.style[u(i)]=null==t[i]||M.regex.isBlank.test(t[i])?"":t[i]}return 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M.listeners[i][r])M.off(t,[r,o].join("."));delete M.listeners[i][r]}}else{for(e in M.listeners[i])M.off(t,e);delete M.listeners[i],delete M.handlerMap[i]}},M.extend(M.Element,{on:function(t,e,n,i){return M.on(this.node,t,e,n,i),this},off:function(t,e){return M.off(this.node,t,e),this},fire:function(e,n){return e instanceof t.Event?this.node.dispatchEvent(e):this.node.dispatchEvent(e=new t.CustomEvent(e,{detail:n,cancelable:!0})),this._event=e,this},event:function(){return this._event}}),M.Defs=M.invent({create:"defs",inherit:M.Container}),M.G=M.invent({create:"g",inherit:M.Container,extend:{x:function(t){return null==t?this.transform("x"):this.transform({x:t-this.x()},!0)},y:function(t){return null==t?this.transform("y"):this.transform({y:t-this.y()},!0)},cx:function(t){return null==t?this.gbox().cx:this.x(t-this.gbox().width/2)},cy:function(t){return null==t?this.gbox().cy:this.y(t-this.gbox().height/2)},gbox:function(){var t=this.bbox(),e=this.transform();return 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e=this.position();return this.parent().add(t,e+1),this}}),M.Mask=M.invent({create:"mask",inherit:M.Container,extend:{remove:function(){return this.targets().forEach(function(t){t.unmask()}),M.Element.prototype.remove.call(this)},targets:function(){return M.select('svg [mask*="'+this.id()+'"]')}},construct:{mask:function(){return this.defs().put(new M.Mask)}}}),M.extend(M.Element,{maskWith:function(t){var e=t instanceof M.Mask?t:this.parent().mask().add(t);return this.attr("mask",N(e))},unmask:function(){return this.attr("mask",null)},masker:function(){return this.reference("mask")}}),M.ClipPath=M.invent({create:"clipPath",inherit:M.Container,extend:{remove:function(){return this.targets().forEach(function(t){t.unclip()}),M.Element.prototype.remove.call(this)},targets:function(){return M.select('svg [clip-path*="'+this.id()+'"]')}},construct:{clip:function(){return this.defs().put(new M.ClipPath)}}}),M.extend(M.Element,{clipWith:function(t){var e=t instanceof M.ClipPath?t:this.parent().clip().add(t);return this.attr("clip-path",N(e))},unclip:function(){return this.attr("clip-path",null)},clipper:function(){return this.reference("clip-path")}}),M.Gradient=M.invent({create:function(t){this.constructor.call(this,M.create(t+"Gradient"))},inherit:M.Container,extend:{at:function(t,e,n){return this.put(new M.Stop).update(t,e,n)},update:function(t){return this.clear(),"function"==typeof t&&t.call(this,this),this},fill:function(){return N(this)},toString:function(){return this.fill()},attr:function(t,e,n){return"transform"==t&&(t="gradientTransform"),M.Container.prototype.attr.call(this,t,e,n)}},construct:{gradient:function(t,e){return this.defs().gradient(t,e)}}}),M.extend(M.Gradient,M.FX,{from:function(t,e){return"radialGradient"==(this._target||this).type?this.attr({fx:new M.Number(t),fy:new M.Number(e)}):this.attr({x1:new M.Number(t),y1:new M.Number(e)})},to:function(t,e){return"radialGradient"==(this._target||this).type?this.attr({cx:new M.Number(t),cy:new M.Number(e)}):this.attr({x2:new M.Number(t),y2:new M.Number(e)})}}),M.extend(M.Defs,{gradient:function(t,e){return this.put(new M.Gradient(t)).update(e)}}),M.Stop=M.invent({create:"stop",inherit:M.Element,extend:{update:function(t){return("number"==typeof t||t instanceof M.Number)&&(t={offset:arguments[0],color:arguments[1],opacity:arguments[2]}),null!=t.opacity&&this.attr("stop-opacity",t.opacity),null!=t.color&&this.attr("stop-color",t.color),null!=t.offset&&this.attr("offset",new M.Number(t.offset)),this}}}),M.Pattern=M.invent({create:"pattern",inherit:M.Container,extend:{fill:function(){return N(this)},update:function(t){return this.clear(),"function"==typeof t&&t.call(this,this),this},toString:function(){return this.fill()},attr:function(t,e,n){return"transform"==t&&(t="patternTransform"),M.Container.prototype.attr.call(this,t,e,n)}},construct:{pattern:function(t,e,n){return this.defs().pattern(t,e,n)}}}),M.extend(M.Defs,{pattern:function(t,e,n){return this.put(new M.Pattern).update(n).attr({x:0,y:0,width:t,height:e,patternUnits:"userSpaceOnUse"})}}),M.Doc=M.invent({create:function(t){t&&(t="string"==typeof t?e.getElementById(t):t,"svg"==t.nodeName?this.constructor.call(this,t):(this.constructor.call(this,M.create("svg")),t.appendChild(this.node),this.size("100%","100%")),this.namespace().defs())},inherit:M.Container,extend:{namespace:function(){return this.attr({xmlns:M.ns,version:"1.1"}).attr("xmlns:xlink",M.xlink,M.xmlns).attr("xmlns:svgjs",M.svgjs,M.xmlns)},defs:function(){if(!this._defs){var t;(t=this.node.getElementsByTagName("defs")[0])?this._defs=M.adopt(t):this._defs=new M.Defs,this.node.appendChild(this._defs.node)}return this._defs},parent:function(){return"#document"==this.node.parentNode.nodeName?null:this.node.parentNode},remove:function(){return this.parent()&&this.parent().removeChild(this.node),this},clear:function(){for(;this.node.hasChildNodes();)this.node.removeChild(this.node.lastChild);return delete 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this.put(new M.Polygon).plot(t||new M.PointArray)}}}),M.extend(M.Polyline,M.Polygon,{array:function(){return this._array||(this._array=new M.PointArray(this.attr("points")))},plot:function(t){return null==t?this.array():this.clear().attr("points","string"==typeof t?t:this._array=new M.PointArray(t))},clear:function(){return delete this._array,this},move:function(t,e){return this.attr("points",this.array().move(t,e))},size:function(t,e){var n=d(this,t,e);return this.attr("points",this.array().size(n.width,n.height))}}),M.extend(M.Line,M.Polyline,M.Polygon,{morphArray:M.PointArray,x:function(t){return null==t?this.bbox().x:this.move(t,this.bbox().y)},y:function(t){return null==t?this.bbox().y:this.move(this.bbox().x,t)},width:function(t){var e=this.bbox();return null==t?e.width:this.size(t,e.height)},height:function(t){var e=this.bbox();return null==t?e.height:this.size(e.width,t)}}),M.Path=M.invent({create:"path",inherit:M.Shape,extend:{morphArray:M.PathArray,array:function(){return this._array||(this._array=new M.PathArray(this.attr("d")))},plot:function(t){return null==t?this.array():this.clear().attr("d","string"==typeof t?t:this._array=new M.PathArray(t))},clear:function(){return delete this._array,this},move:function(t,e){return this.attr("d",this.array().move(t,e))},x:function(t){return null==t?this.bbox().x:this.move(t,this.bbox().y)},y:function(t){return null==t?this.bbox().y:this.move(this.bbox().x,t)},size:function(t,e){var n=d(this,t,e);return this.attr("d",this.array().size(n.width,n.height))},width:function(t){return null==t?this.bbox().width:this.size(t,this.bbox().height)},height:function(t){return null==t?this.bbox().height:this.size(this.bbox().width,t)}},construct:{path:function(t){return this.put(new M.Path).plot(t||new M.PathArray)}}}),M.Image=M.invent({create:"image",inherit:M.Shape,extend:{load:function(e,n){if(!e)return this;var i=new t.Image;return M.on(i,"load",function(t){var r=this.parent();0==this.width()&&0==this.height()&&this.size(i.width,i.height),r instanceof M.Pattern&&0==r.width()&&0==r.height()&&r.size(this.width(),this.height()),"function"==typeof n&&n.call(this,{width:i.width,height:i.height,ratio:i.width/i.height,url:e})},this),this.attr("href",i.src=e,M.xlink)}},construct:{image:function(t,e){return this.put(new M.Image).size(0,0).load(t,e)}}}),M.Text=M.invent({create:function(){this.constructor.call(this,M.create("text")),this.dom.leading=new M.Number(1.3),this._rebuild=!0,this._build=!1,this.attr("font-family",M.defaults.attrs["font-family"])},inherit:M.Parent,extend:{x:function(t){return null==t?this.attr("x"):this.attr("x",t)},y:function(t){var e=this.attr("y"),n="number"==typeof e?e-this.bbox().y:0;return null==t?"number"==typeof e?e-n:e:this.attr("y","number"==typeof t?t+n:t)},cx:function(t){return null==t?this.bbox().cx:this.x(t-this.bbox().width/2)},cy:function(t){return 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this.node.getComputedTextLength()}}),M.TextPath=M.invent({create:"textPath",inherit:M.Parent,parent:M.Text,construct:{path:function(t){for(var e=new M.TextPath,n=this.doc().defs().path(t);this.node.hasChildNodes();)e.node.appendChild(this.node.firstChild);return this.node.appendChild(e.node),e.attr("href","#"+n,M.xlink),this},array:function(){var t=this.track();return t?t.array():null},plot:function(t){var e=this.track(),n=null;return e&&(n=e.plot(t)),null==t?n:this},track:function(){var t=this.textPath();if(t)return t.reference("href")},textPath:function(){if(this.node.firstChild&&"textPath"==this.node.firstChild.nodeName)return M.adopt(this.node.firstChild)}}}),M.Nested=M.invent({create:function(){this.constructor.call(this,M.create("svg")),this.css("overflow","visible")},inherit:M.Container,construct:{nested:function(){return this.put(new M.Nested)}}}),M.A=M.invent({create:"a",inherit:M.Container,extend:{to:function(t){return this.attr("href",t,M.xlink)},show:function(t){return this.attr("show",t,M.xlink)},target:function(t){return this.attr("target",t)}},construct:{link:function(t){return this.put(new M.A).to(t)}}}),M.extend(M.Element,{linkTo:function(t){var e=new M.A;return"function"==typeof t?t.call(e,e):e.to(t),this.parent().put(e).put(this)}}),M.Marker=M.invent({create:"marker",inherit:M.Container,extend:{width:function(t){return this.attr("markerWidth",t)},height:function(t){return this.attr("markerHeight",t)},ref:function(t,e){return this.attr("refX",t).attr("refY",e)},update:function(t){return this.clear(),"function"==typeof t&&t.call(this,this),this},toString:function(){return N(this)}},construct:{marker:function(t,e,n){return this.defs().marker(t,e,n)}}}),M.extend(M.Defs,{marker:function(t,e,n){return this.put(new M.Marker).size(t,e).ref(t/2,e/2).viewbox(0,0,t,e).attr("orient","auto").update(n)}}),M.extend(M.Line,M.Polyline,M.Polygon,M.Path,{marker:function(t,e,n,i){var r=["marker"];return"all"!=t&&r.push(t),r=r.join("-"),t=arguments[1]instanceof M.Marker?arguments[1]:this.doc().marker(e,n,i),this.attr(r,t)}});var T={stroke:["color","width","opacity","linecap","linejoin","miterlimit","dasharray","dashoffset"],fill:["color","opacity","rule"],prefix:function(t,e){return"color"==e?t:t+"-"+e}};["fill","stroke"].forEach(function(t){var e,n={};n[t]=function(n){if("undefined"==typeof n)return this;if("string"==typeof n||M.Color.isRgb(n)||n&&"function"==typeof n.fill)this.attr(t,n);else for(e=T[t].length-1;e>=0;e--)null!=n[T[t][e]]&&this.attr(T.prefix(t,T[t][e]),n[T[t][e]]);return this},M.extend(M.Element,M.FX,n)}),M.extend(M.Element,M.FX,{rotate:function(t,e,n){return this.transform({rotation:t,cx:e,cy:n})},skew:function(t,e,n,i){return 1==arguments.length||3==arguments.length?this.transform({skew:t,cx:e,cy:n}):this.transform({skewX:t,skewY:e,cx:n,cy:i})},scale:function(t,e,n,i){return 1==arguments.length||3==arguments.length?this.transform({scale:t,cx:e,cy:n}):this.transform({scaleX:t,scaleY:e,cx:n,cy:i})},translate:function(t,e){return this.transform({x:t,y:e})},flip:function(t,e){return e="number"==typeof t?t:e,this.transform({flip:t||"both",offset:e})},matrix:function(t){return this.attr("transform",new M.Matrix(6==arguments.length?[].slice.call(arguments):t))},opacity:function(t){return this.attr("opacity",t)},dx:function(t){return this.x(new M.Number(t).plus(this instanceof M.FX?0:this.x()),!0)},dy:function(t){return this.y(new M.Number(t).plus(this instanceof M.FX?0:this.y()),!0)},dmove:function(t,e){return this.dx(t).dy(e)}}),M.extend(M.Rect,M.Ellipse,M.Circle,M.Gradient,M.FX,{radius:function(t,e){var n=(this._target||this).type;return"radialGradient"==n||"radialGradient"==n?this.attr("r",new M.Number(t)):this.rx(t).ry(null==e?t:e)}}),M.extend(M.Path,{length:function(){return this.node.getTotalLength()},pointAt:function(t){return new M.Point(this.node.getPointAtLength(t))}}),M.extend(M.Parent,M.Text,M.Tspan,M.FX,{font:function(t,e){if("object"==typeof t)for(e in t)this.font(e,t[e]);return"leading"==t?this.leading(e):"anchor"==t?this.attr("text-anchor",e):"size"==t||"family"==t||"weight"==t||"stretch"==t||"variant"==t||"style"==t?this.attr("font-"+t,e):this.attr(t,e)}}),M.extend(M.Element,{data:function(t,e,n){if("object"==typeof t)for(e in t)this.data(e,t[e]);else if(arguments.length<2)try{return JSON.parse(this.attr("data-"+t))}catch(e){return this.attr("data-"+t)}else this.attr("data-"+t,null===e?null:n===!0||"string"==typeof e||"number"==typeof e?e:JSON.stringify(e));return this}}),M.extend(M.Element,{remember:function(t,e){if("object"==typeof arguments[0])for(var e in t)this.remember(e,t[e]);else{if(1==arguments.length)return this.memory()[t];this.memory()[t]=e}return this},forget:function(){if(0==arguments.length)this._memory={};else for(var t=arguments.length-1;t>=0;t--)delete this.memory()[arguments[t]];return this},memory:function(){return this._memory||(this._memory={})}}),M.get=function(t){var n=e.getElementById(b(t)||t);return M.adopt(n)},M.select=function(t,n){return M.utils.map((n||e).querySelectorAll(t),function(t){return M.adopt(t)})},M.$$=function(t,n){return M.utils.map((n||e).querySelectorAll(t),function(t){return M.adopt(t)})},M.$=function(t,n){return M.adopt((n||e).querySelector(t))},M.extend(M.Parent,{select:function(t){return M.select(t,this.node)}});var _="abcdef".split("");return M.Box=M.invent({create:function(t){var e=[0,0,0,0];t="string"==typeof t?t.split(M.regex.delimiter).map(parseFloat):Array.isArray(t)?t:"object"==typeof t?[null!=t.left?t.left:t.x,null!=t.top?t.top:t.y,t.width,t.height]:4==arguments.length?[].slice.call(arguments):e,this.x=t[0],this.y=t[1],this.width=t[2],this.height=t[3],w(this)},extend:{merge:function(t){var e=Math.min(this.x,t.x),n=Math.min(this.y,t.y);return new M.Box(e,n,Math.max(this.x+this.width,t.x+t.width)-e,Math.max(this.y+this.height,t.y+t.height)-n)},transform:function(t){var e=1/0,n=-(1/0),i=1/0,r=-(1/0),s=[new M.Point(this.x,this.y),new M.Point(this.x2,this.y),new M.Point(this.x,this.y2),new M.Point(this.x2,this.y2)];return s.forEach(function(s){s=s.transform(t),e=Math.min(e,s.x),n=Math.max(n,s.x),i=Math.min(i,s.y),r=Math.max(r,s.y)}),new M.Box(e,i,n-e,r-i)},addOffset:function(){return this.x+=t.pageXOffset,this.y+=t.pageYOffset,this},toString:function(){return this.x+" "+this.y+" "+this.width+" "+this.height},morph:function(t,e,n,i){return this.destination=new M.Box(t,e,n,i),this},at:function(t){return this.destination?new M.Box(this.x+(this.destination.x-this.x)*t,this.y+(this.destination.y-this.y)*t,this.width+(this.destination.width-this.width)*t,this.height+(this.destination.height-this.height)*t):this}},parent:M.Element,construct:{bbox:function(){var t;try{if(t=this.node.getBBox(),i(t)&&!r(this.node))throw new Exception("Element not in the dom")}catch(n){try{var e=this.clone(M.parser.draw.instance).show();t=e.node.getBBox(),e.remove()}catch(t){console.warn("Getting a bounding box of this element is not possible")}}return new M.Box(t)},rbox:function(t){try{var e=new M.Box(this.node.getBoundingClientRect());return t?e.transform(t.screenCTM().inverse()):e.addOffset()}catch(t){return new M.Box}}}}),M.extend(M.Doc,M.Nested,M.Symbol,M.Image,M.Pattern,M.Marker,M.ForeignObject,M.View,{viewbox:function(t,e,n,i){return null==t?new M.Box(this.attr("viewBox")):this.attr("viewBox",new M.Box(t,e,n,i))}}),M});
\ No newline at end of file
diff --git a/spec/spec/clip.js b/spec/spec/clip.js
index f333039..20855ff 100644
--- a/spec/spec/clip.js
+++ b/spec/spec/clip.js
@@ -20,7 +20,7 @@ describe('ClipPath', function() {
   })
 
   it('sets the "clip-path" attribute on the cliped element with the clip id', function() {
-    expect(rect.attr('clip-path')).toBe('url("#' + circle.parent().id() + '")')
+    expect(rect.attr('clip-path')).toBe('url(' + window.location + '#' + circle.parent().id() + ')')
   })
 
   it('references the clip element in the masked element', function() {
diff --git a/spec/spec/gradient.js b/spec/spec/gradient.js
index b7db2f0..a9fe8b3 100644
--- a/spec/spec/gradient.js
+++ b/spec/spec/gradient.js
@@ -29,7 +29,7 @@ describe('Gradient', function() {
 
   describe('fill()', function() {
     it('returns the id of the gradient wrapped in url()', function() {
-      expect(gradient.fill()).toBe('url(#' + gradient.id() + ')')
+      expect(gradient.fill()).toBe('url(' + window.location + '#' + gradient.id() + ')')
     })
   })
   
@@ -67,11 +67,11 @@ describe('Gradient', function() {
 
   describe('toString()', function() {
     it('returns the id of the gradient wrapped in url()', function() {
-      expect(gradient + '').toBe('url(#' + gradient.id() + ')')
+      expect(gradient + '').toBe('url(' + window.location + '#' + gradient.id() + ')')
     })
     it('is called when instance is passed as an attribute value', function() {
       rect.attr('fill', gradient)
-      expect(rect.attr('fill')).toBe('url(#' + gradient.id() + ')')
+      expect(rect.attr('fill')).toBe('url(' + window.location + '#' + gradient.id() + ')')
     })
   })
 
diff --git a/spec/spec/mask.js b/spec/spec/mask.js
index e61ccbd..6db10b1 100644
--- a/spec/spec/mask.js
+++ b/spec/spec/mask.js
@@ -20,7 +20,7 @@ describe('Mask', function() {
   })
 
   it('sets the "mask" attribute on the masked element with the mask id', function() {
-    expect(rect.attr('mask')).toBe('url("#' + circle.parent().id() + '")')
+    expect(rect.attr('mask')).toBe('url(' + window.location + '#' + circle.parent().id() + ')')
   })
 
   it('references the mask element in the masked element', function() {
diff --git a/spec/spec/pattern.js b/spec/spec/pattern.js
index 3a749c1..245179f 100644
--- a/spec/spec/pattern.js
+++ b/spec/spec/pattern.js
@@ -25,7 +25,7 @@ describe('Pattern', function() {
 
   describe('fill()', function() {
     it('returns the id of the pattern wrapped in url()', function() {
-      expect(pattern.fill()).toBe('url(#' + pattern.id() + ')')
+      expect(pattern.fill()).toBe('url(' + window.location + '#' + pattern.id() + ')')
     })
   })
 
@@ -37,15 +37,15 @@ describe('Pattern', function() {
 
   describe('toString()', function() {
     it('returns the id of the pattern wrapped in url()', function() {
-      expect(pattern + '').toBe('url(#' + pattern.id() + ')')
+      expect(pattern + '').toBe('url(' + window.location + '#' + pattern.id() + ')')
     })
     it('is called when instance is passed as an attribute value', function() {
       rect.attr('fill', pattern)
-      expect(rect.attr('fill')).toBe('url(#' + pattern.id() + ')')
+      expect(rect.attr('fill')).toBe('url(' + window.location + '#' + pattern.id() + ')')
     })
     it('is called when instance is passed in a fill() method', function() {
       rect.fill(pattern)
-      expect(rect.attr('fill')).toBe('url(#' + pattern.id() + ')')
+      expect(rect.attr('fill')).toBe('url(' + window.location + '#' + pattern.id() + ')')
     })
   })
 
diff --git a/src/clip.js b/src/clip.js
index b43712e..0030d5d 100644
--- a/src/clip.js
+++ b/src/clip.js
@@ -40,7 +40,7 @@ SVG.extend(SVG.Element, {
     var clipper = element instanceof SVG.ClipPath ? element : this.parent().clip().add(element)
 
     // apply mask
-    return this.attr('clip-path', 'url("#' + clipper.id() + '")')
+    return this.attr('clip-path', url(clipper))
   }
   // Unclip element
 , unclip: function() {
diff --git a/src/element.js b/src/element.js
index cedaf2d..25bc91c 100644
--- a/src/element.js
+++ b/src/element.js
@@ -220,6 +220,8 @@ SVG.Element = SVG.invent({
         // dump raw svg
         well.innerHTML = svg
 
+        addPrefixToReferences(well)
+        
         // transplant nodes
         for (len = well.childNodes.length;len--;)
           if(well.firstChild.nodeType != 1)
@@ -229,6 +231,7 @@ SVG.Element = SVG.invent({
 
       // otherwise act as a getter
       } else {
+        removePrefixFromReferences(this.node)
         return this.node.outerHTML
       }
 
diff --git a/src/gradient.js b/src/gradient.js
index a16c092..7ba7dd7 100644
--- a/src/gradient.js
+++ b/src/gradient.js
@@ -26,7 +26,7 @@ SVG.Gradient = SVG.invent({
     }
     // Return the fill id
   , fill: function() {
-      return 'url(#' + this.id() + ')'
+      return url(this)
     }
     // Alias string convertion to fill
   , toString: function() {
diff --git a/src/helpers.js b/src/helpers.js
index 6a07482..50c0330 100644
--- a/src/helpers.js
+++ b/src/helpers.js
@@ -185,5 +185,36 @@ function idFromReference(url) {
   if (m) return m[1]
 }
 
+// creates an url reference out of nodes id
+function url(node) {
+  return 'url(' + window.location + '#' + node.id() + ')'
+}
+
+function removePrefixFromReferences(node) {
+  for (var i = node.childNodes.length - 1; i >= 0; i--)
+    if (node.childNodes[i] instanceof window.SVGElement)
+      removePrefixFromReferences(node.childNodes[i])
+
+  var v = node.attributes, match
+  for (n = v.length - 1; n >= 0; n--) {
+    if(match = SVG.regex.isUrl.exec(v[n].nodeValue)) {
+      if(match[1] == window.location) v[n].nodeValue = 'url(#' + match[2] + ')'
+    }
+  }
+}
+
+function addPrefixToReferences(node) {
+  for (var i = node.childNodes.length - 1; i >= 0; i--)
+    if (node.childNodes[i] instanceof window.SVGElement)
+      addPrefixToReferences(node.childNodes[i])
+
+  var v = node.attributes, match
+  for (n = v.length - 1; n >= 0; n--) {
+    if(match = SVG.regex.isUrl.exec(v[n].nodeValue)) {
+      if(!match[1]) v[n].nodeValue = 'url(' + window.location + '#' + match[2] + ')'
+    }
+  }
+}
+
 // Create matrix array for looping
 var abcdef = 'abcdef'.split('')
diff --git a/src/marker.js b/src/marker.js
index cdde0ff..43282d7 100644
--- a/src/marker.js
+++ b/src/marker.js
@@ -32,7 +32,7 @@ SVG.Marker = SVG.invent({
     }
     // Return the fill id
   , toString: function() {
-      return 'url(#' + this.id() + ')'
+      return url(this)
     }
   }
 
diff --git a/src/mask.js b/src/mask.js
index 610608e..15aa2fc 100644
--- a/src/mask.js
+++ b/src/mask.js
@@ -40,7 +40,7 @@ SVG.extend(SVG.Element, {
     var masker = element instanceof SVG.Mask ? element : this.parent().mask().add(element)
 
     // apply mask
-    return this.attr('mask', 'url("#' + masker.id() + '")')
+    return this.attr('mask', url(masker))
   }
   // Unmask element
 , unmask: function() {
diff --git a/src/pattern.js b/src/pattern.js
index fed33c8..65f848b 100644
--- a/src/pattern.js
+++ b/src/pattern.js
@@ -9,7 +9,7 @@ SVG.Pattern = SVG.invent({
 , extend: {
     // Return the fill id
     fill: function() {
-      return 'url(#' + this.id() + ')'
+      return url(this)
     }
     // Update pattern by rebuilding
   , update: function(block) {
diff --git a/src/regex.js b/src/regex.js
index c0ca706..4c95cb4 100644
--- a/src/regex.js
+++ b/src/regex.js
@@ -39,6 +39,9 @@ SVG.regex = {
   // Test for image url
 , isImage:          /\.(jpg|jpeg|png|gif|svg)(\?[^=]+.*)?/i
 
+  // Test for url reference
+, isUrl:            /url\(([-\w:/]+(?:\.\w+)?)?#([-\w]+)\)/
+
   // split at whitespace and comma
 , delimiter:        /[\s,]+/