function popme(linko,ancho,alto,nombre) {
	var winl = (screen.width - ancho -2) / 2;
	var wint = (screen.height - alto -2) / 2;
	var prop = "toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,scrolling=no,width="+ancho+",height="+alto+",top="+wint+",left="+winl;
	window.open(linko,nombre,prop);
}