Array.indexOf(), though implemented in FF, is not standard javascript. we replace it with OpenLayers.Util.indexOf(), replace all usage

git-svn-id: http://svn.openlayers.org/trunk/openlayers@1596 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Util.js

@@ -60,6 +60,21 @@ OpenLayers.Util.clearArray = function(array) {
     array.length = 0;
 };
 
+/** Seems to exist already in FF, but not in MOZ.
+ * 
+ * @param {Array} array
+ * @param {Object} obj
+ */
+OpenLayers.Util.indexOf = function(array, obj) {
+
+    for(var i=0; i < array.length; i++) {
+        if (array[i] == obj) return i;
+    }
+    return -1;   
+};
+
+
+
 /**
  * @param {String} id
  * @param {OpenLayers.Pixel} px