// JavaScript Document

	// for browsers that don't support Array.indexOf
	// must be called somewhere on startup to define prototype 'indexOf' on Array

	function defineArrayIndexOf() {
		if(!Array.indexOf){
			Array.prototype.indexOf = function(obj){
				var retVal=-1;
				for(var i=0; i<this.length; i++){
					if(this[i]==obj){
						retVal= i;
					}
				}
				return retVal;
			}
		}
	}