// JavaScript Document
//Me permite hacer cosas no intrusivas
function addLoadEvent(func){
    var oldonload = window.onload;
    if (typeof window.onload != 'function')
    {
        window.onload = func;
    }else{
        window.onload = function(){
            if (oldonload)
            {
                oldonload();
            }
            func();
        }
    }
}