function PopUp(ancho, alto, url, scrollbar, resize, status, tool, menu, location, nombre)
{
	var height= window.screen.height;
	var width = window.screen.width;
	var posy = (height - alto)/2;
	var posx = (width - ancho)/2;
	var caracteristicas = "height=" + alto + ",width=" + ancho + ",status=" + status + ",toolbar=" + tool + ",menubar=" + menu + ",location=" + location + ",top=" + posy + ",left=" + posx + ",scrollbars=" + scrollbar + ",resizable=" + resize;
	window.open(url,nombre,caracteristicas);
}