/*-------------------------------------------------*/
function getObjeto(nomObj){
	var d;
	if (arguments.length < 1) 
		return null;
	else if (arguments.length == 1) 
		d = document;
	else {
		if (arguments[1]!=null)	
			d = arguments[1].document;
		else
			d = document;
	}
	if(d.getElementById){
		o=d.getElementById(nomObj);
	}else if(d.all){
		o=d.all[nomObj];
	}else if(d.layers){
		o=d.layers.eval(nomObj);
	}
	return(o);
}
/*-------------------------------------------------*/
function setFoco(nomObj) {
	//No pita cuando pasamos arguments[1] (p.ej: window.parent)
	var obj;
	if (arguments[1])
		obj = getObjeto(nomObj, arguments[1]);
	else
		obj = getObjeto(nomObj);
	obj.focus;
}
/*-------------------------------------------------*/
String.prototype.trim = function() {
//Creamos una funcion trim en la clase String
	var obj=this;
	obj=obj.replace(/^\s*(.*)/, "$1");
	obj=obj.replace(/(.*?)\s*$/, "$1");
	return obj;
}
/*-------------------------------------------------*/