diff --git a/README.md b/README.md
index 1ef8ae6..9f4e36f 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@
 __Domvas implements the missing piece that connects the DOM and Canvas__. It gives to the ability to take arbitrary DOM content and paint it to a Canvas of your choice.
 
 ## Usage
+
 ```js
 var canvas = document.getElementById("test");
 var context = canvas.getContext('2d');
@@ -15,10 +16,12 @@ domvas.toImage(document.getElementById("dom"), function() {
 ```
 
 ## Syntax
+
 ```js
 domvas.toImage(domElement, readyCallback, width, height, left, top);
 ```
-readyCallback's 'this' and first argument points to a valid, preloaded image node that you can simply draw to your canvas context.
+
+readyCallback's `this` and first argument points to a valid, preloaded image node that you can simply draw to your canvas context.
 
 ## How it works
 
diff --git a/src/domvas.js b/src/domvas.js
index 2d81473..4a8a9e4 100644
--- a/src/domvas.js
+++ b/src/domvas.js
@@ -1,14 +1,13 @@
-"use strict";
-
-(function() {
+(function(window, document) {
+	"use strict";
 
 	var supportsCSSText = getComputedStyle(document.body).cssText !== "";
 
-	function copyCSS(elem, origElem, log) {
+	function copyCSS(elem, origElem) {
 
 		var computedStyle = getComputedStyle(origElem);
 
-		if(supportsCSSText) {
+		if (supportsCSSText) {
 			elem.style.cssText = computedStyle.cssText;
 
 		} else {
@@ -30,15 +29,17 @@
 		var origChildren = origElem.querySelectorAll('*');
 
 		// copy the current style to the clone
-		copyCSS(elem, origElem, 1);
+		copyCSS(elem, origElem);
 
 		// collect all nodes within the element, copy the current style to the clone
 		Array.prototype.forEach.call(children, function(child, i) {
 			copyCSS(child, origChildren[i]);
 		});
+        
+		var elstyle = elem.style;
 
 		// strip margins from the outer element
-		elem.style.margin = elem.style.marginLeft = elem.style.marginTop = elem.style.marginBottom = elem.style.marginRight = '';
+		elstyle.margin = elstyle.marginLeft = elstyle.marginTop = elstyle.marginBottom = elstyle.marginRight = '';
 
 	}
 
@@ -62,11 +63,12 @@
 
 			// Create well formed data URL with our DOM string wrapped in SVG
 			var dataUri = "data:image/svg+xml," +
-				"<svg xmlns='http://www.w3.org/2000/svg' width='" + ((width || origElem.offsetWidth) + left) + "' height='" + ((height || origElem.offsetHeight) + top) + "'>" +
-					"<foreignObject width='100%' height='100%' x='" + left + "' y='" + top + "'>" +
-					serialized +
-					"</foreignObject>" +
-				"</svg>";
+				"<svg xmlns='http://www.w3.org/2000/svg' width='" +
+                ((width || origElem.offsetWidth) + left) + "' height='" +
+                ((height || origElem.offsetHeight) + top) + "'>" +
+				"<foreignObject width='100%' height='100%' x='" + left + "' y='" + top + "'>" +
+				serialized +
+				"</foreignObject></svg>";
 
 			// create new, actual image
 			var img = new Image();
@@ -83,5 +85,5 @@
 
 	};
 
-})();
+})(window, document);
 
diff --git a/src/domvas.min.js b/src/domvas.min.js
index 20146c6..c09376b 100644
--- a/src/domvas.min.js
+++ b/src/domvas.min.js
@@ -1 +1 @@
-"use strict";(function(){function t(t,n,r){var i=getComputedStyle(n);if(e)t.style.cssText=i.cssText;else for(var s in i)isNaN(parseInt(s,10))&&typeof i[s]!="function"&&!/^(cssText|length|parentRule)$/.test(s)&&(t.style[s]=i[s])}function n(e,n){var r=e.querySelectorAll("*"),i=n.querySelectorAll("*");t(e,n,1),Array.prototype.forEach.call(r,function(e,n){t(e,i[n])}),e.style.margin=e.style.marginLeft=e.style.marginTop=e.style.marginBottom=e.style.marginRight=""}var e=getComputedStyle(document.body).cssText!=="";window.domvas={toImage:function(e,t,r,i,s,o){s=s||0,o=o||0;var u=e.cloneNode(!0);n(u,e),u.setAttribute("xmlns","http://www.w3.org/1999/xhtml");var a=(new XMLSerializer).serializeToString(u),f="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='"+((r||e.offsetWidth)+s)+"' height='"+((i||e.offsetHeight)+o)+"'>"+"<foreignObject width='100%' height='100%' x='"+s+"' y='"+o+"'>"+a+"</foreignObject>"+"</svg>",l=new Image;l.src=f,l.onload=function(){t&&t.call(this,this)}}}})()
+!function(e,i){"use strict";function t(i,o){var e=getComputedStyle(o);if(n)i.style.cssText=e.cssText;else for(var t in e)isNaN(parseInt(t,10))&&"function"!=typeof e[t]&&!/^(cssText|length|parentRule)$/.test(t)&&(i.style[t]=e[t])}function o(i,o){var n=i.querySelectorAll("*"),r=o.querySelectorAll("*");t(i,o),Array.prototype.forEach.call(n,function(e,i){t(e,r[i])});var e=i.style;e.margin=e.marginLeft=e.marginTop=e.marginBottom=e.marginRight=""}var n=""!==getComputedStyle(i.body).cssText;e.domvas={toImage:function(t,r,a,l,e,i){e=e||0,i=i||0;var n=t.cloneNode(!0);o(n,t),n.setAttribute("xmlns","http://www.w3.org/1999/xhtml");var g=(new XMLSerializer).serializeToString(n),c="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='"+((a||t.offsetWidth)+e)+"' height='"+((l||t.offsetHeight)+i)+"'><foreignObject width='100%' height='100%' x='"+e+"' y='"+i+"'>"+g+"</foreignObject></svg>",s=new Image;s.src=c,s.onload=function(){r&&r.call(this,this)}}}}(window,document);
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