diff --git a/Blob.js b/Blob.js
index c740cd8..7807064 100644
--- a/Blob.js
+++ b/Blob.js
@@ -1,6 +1,6 @@
 /* Blob.js
  * A Blob implementation.
- * 2014-07-01
+ * 2014-07-24
  * 
  * By Eli Grey, http://eligrey.com
  * By Devin Samarin, https://github.com/eboyjr
@@ -62,13 +62,31 @@
 			
 			, ArrayBuffer = view.ArrayBuffer
 			, Uint8Array = view.Uint8Array
+
+			, origin = /^[\w-]+:\/*\[?[\w\.:-]+\]?(?::[0-9]+)?/
 		;
 		FakeBlob.fake = FB_proto.fake = true;
 		while (file_ex_code--) {
 			FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;
 		}
+		// Polyfill URL
 		if (!real_URL.createObjectURL) {
-			URL = view.URL = {};
+			URL = view.URL = function(uri) {
+				var
+					  uri_info = document.createElementNS("http://www.w3.org/1999/xhtml", "a")
+					, uri_origin
+				;
+				uri_info.href = uri;
+				if (!("origin" in uri_info)) {
+					if (uri_info.protocol.toLowerCase() === "data:") {
+						uri_info.origin = null;
+					} else {
+						uri_origin = uri.match(origin);
+						uri_info.origin = uri_origin && uri_origin[1];
+					}
+				}
+				return uri_info;
+			};
 		}
 		URL.createObjectURL = function(blob) {
 			var