diff --git a/jquery.websocket.js b/jquery.websocket.js
index e74616c..19ba8f5 100644
--- a/jquery.websocket.js
+++ b/jquery.websocket.js
@@ -11,6 +11,9 @@
 (function($){
     $.extend({
         websocket: function(url, s) {
+       	    if (typeof(WebSocket) == "undefined") {
+       	        WebSocket = (MozWebSocket) ? MozWebSocket : null;
+       	    }
             var ws = WebSocket ? new WebSocket( url ) : {
                 send: function(m){ return false },
                 close: function(){}