Take care not to clobber any previously set window.$ value. IE, in its mysterious ways, sets $ to undefined if we have a conditional 'var $ = somefunc;' expression - even if the condition evaluates to false. Problem does not occur if expression is 'window.$ = somefunc;'. This makes OL play nicely with jQuery (among others) in IE. r=crschmidt (pullup #1391)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@9400 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Util.js

@@ -32,10 +32,10 @@ OpenLayers.Util.getElement = function() {
 };
 
 /** 
- * Maintain $() from prototype
+ * Maintain existing definition of $.
  */
-if ($ == null) {
-    var $ = OpenLayers.Util.getElement;
+if(typeof window.$  === "undefined") {
+    window.$ = OpenLayers.Util.getElement;
 }
 
 /**