var dhtml={
	addOnLoadEvent:function(funcion){
		var onloadAnterior = window.onload;
		if (typeof window.onload != 'function') {
			window.onload = funcion;
		} else {
			window.onload = function() {
				if (onloadAnterior) {
					onloadAnterior();
				}
				funcion();
			}
		}
	}
}