//v1.0
//Copyright 2006 Igoox S.L., Inc. All rights reserved.
function AbrirVentana(url,nombre,ancho,alto,centrar) {
	 var pos_x,pos_y;
  	 if (centrar)
     {
		pos_x=(screen.width-ancho)/2;
		pos_y=((screen.height-alto)/2)-15;
     }
	 window.open(url,nombre,'scrollbars=yes,toolbar=no,location=no,directories=no,' + 'status=no,menubar=no,resizable=no,width=' + ancho + ',height=' + alto + (centrar?',top=' + pos_y + ',left=' + pos_x:''));
}
function Atras() {
	history.back();
}
if (window != window.top)
	top.location.href = location.href;