diff --git a/lib/javascript-static.js b/lib/javascript-static.js
index cb09d37c0c0..caec82b2016 100644
--- a/lib/javascript-static.js
+++ b/lib/javascript-static.js
@@ -206,9 +206,9 @@ function findParentNode(el, elName, elClass, elId) {
 */
 function findChildNodes(start, tagName, elementClass, elementID, elementName) {
     var children = new Array();
-    for (var childIndex in start.childNodes) {
+    for (var i = 0; i < start.childNodes.length; i++) {
         var classfound = false;
-        var child = start.childNodes[childIndex];
+        var child = start.childNodes[i];
         if((child.nodeType == 1) &&//element node type
                   (elementClass && (typeof(child.className)=='string'))){
             var childClasses = child.className.split(/\s+/);