diff --git a/core/js/js.js b/core/js/js.js
index 80914e954e5e371e8b554081950caa82ee1f2b84..c137f734d919592e57891280be0e06d1104e510a 100644
--- a/core/js/js.js
+++ b/core/js/js.js
@@ -8,6 +8,7 @@
 var oc_debug;
 var oc_webroot;
 var oc_requesttoken;
+oc_webroot = oc_webroot || location.pathname.substr(0, location.pathname.lastIndexOf('/'));
 if (oc_debug !== true || typeof console === "undefined" || typeof console.log === "undefined") {
 	if (!window.console) {
 		window.console = {};