* Checks whether or not the specified object exists in the array.
* @param {Object} o The object to check for
* @return {Number} The index of o in the array (or -1 if it is not found)
*/
indexOf : function(o){
for (var i = 0, len = this.length; i < len; i++){
* Checks whether or not the specified object exists in the array.
* @param {Object} o The object to check for
* @return {Number} The index of o in the array (or -1 if it is not found)
*/
indexOf : function(o){
for (var i = 0, len = this.length; i < len; i++){