if(this[from] === item) return from; 
if (this[from] === item) return from; 
	indexOf: function(item, from){		from = from || 0;		var len = this.length;		if (from < 0) from = Math.max(0, len + from);		while (from < len){			if(this[from] === item) return from;			from++;		}		return -1;	},
5733	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5733/0ea13c407f295a800d34adf6f6781e9d4f15d4d1/Array.js/clean/Native/Array.js