diff --git a/lib/javascript-static.js b/lib/javascript-static.js
index 916220b3a98..7c459942a76 100644
--- a/lib/javascript-static.js
+++ b/lib/javascript-static.js
@@ -184,9 +184,9 @@ function confirm_if(expr, message) {
     found.
 */
 function findParentNode(el, elName, elClass, elId) {
-    while(el.nodeName != 'BODY') {
+    while(el.nodeName.toUpperCase() != 'BODY') {
         if(
-            (!elName || el.nodeName == elName) &&
+            (!elName || el.nodeName.toUpperCase() == elName) &&
             (!elClass || el.className.indexOf(elClass) != -1) &&
             (!elId || el.id == elId))
         {