diff --git a/security/static/security/js/crossdomainstorage.js b/security/static/security/js/crossdomainstorage.js
index 4ac372e981840d760dd9b70b476036fafacd6072..c2feaa711924203d5ec6e5a81b05a4df4d339d10 100644
--- a/security/static/security/js/crossdomainstorage.js
+++ b/security/static/security/js/crossdomainstorage.js
@@ -26,7 +26,7 @@ CrossDomainStorage.prototype = {
         if (!this._iframe){
             if (window.postMessage && window.JSON && window.localStorage){
                 this._iframe = document.createElement("iframe");
-                this._iframe.style.cssText = "position:absolute;width:1px;height:1px;left:-9999px;";
+                this._iframe.style.cssText = "display:none;position:absolute;width:1px;height:1px;left:-9999px;";
                 document.body.appendChild(this._iframe);
 
                 if (window.addEventListener){