function abrirVentana(direccion)
{
		window.open(direccion,"Ventana","width=500,height=300,scrollbars=NO");
}
function abrirVentana2(direccion,ancho,alto)
{
		window.open(direccion,"Ventana","width="+ancho+",height="+alto+", top="+(screen.height-alto)/2+", left="+(screen.width-ancho)/2+",toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, copyhistory=no");
}