diff --git a/src/static/js/html10n.js b/src/static/js/html10n.js
index b2c4e6195..d0d14814b 100644
--- a/src/static/js/html10n.js
+++ b/src/static/js/html10n.js
@@ -21,6 +21,8 @@
  * IN THE SOFTWARE.
  */
 window.html10n = (function(window, document, undefined) {
+  
+  // fix console
   var console = window.console
   function interceptConsole(method){
       if (!console) return function() {}
@@ -44,6 +46,39 @@ window.html10n = (function(window, document, undefined) {
     , consoleError = interceptConsole('warn')
 
 
+  // fix Array.prototype.instanceOf in, guess what, IE! <3
+  if (!Array.prototype.indexOf) {
+    Array.prototype.indexOf = function (searchElement /*, fromIndex */ ) {
+      "use strict";
+      if (this == null) {
+        throw new TypeError();
+      }
+      var t = Object(this);
+      var len = t.length >>> 0;
+      if (len === 0) {
+        return -1;
+      }
+      var n = 0;
+      if (arguments.length > 1) {
+        n = Number(arguments[1]);
+        if (n != n) { // shortcut for verifying if it's NaN
+            n = 0;
+        } else if (n != 0 && n != Infinity && n != -Infinity) {
+            n = (n > 0 || -1) * Math.floor(Math.abs(n));
+        }
+      }
+      if (n >= len) {
+        return -1;
+      }
+      var k = n >= 0 ? n : Math.max(len - Math.abs(n), 0);
+      for (; k < len; k++) {
+        if (k in t && t[k] === searchElement) {
+            return k;
+        }
+      }
+      return -1;
+    }
+  }
     
   /**
    * MicroEvent - to make any js object an event emitter (server or browser)