Just an idiot fix to increase the number of my posts =b


//+ Jonas Raoni Soares Silva
//@ http://jsfromhell.com
[].indexOf || (Array.prototype.indexOf = function(v){
       for(var i = this.length; i-- && this[i] !== v;);
       return i;
});


example


var x = [0,1,2,3];

alert(x.indexOf(2));
alert(x.indexOf(4));