function consultar(id,tbl)
{
	var ancho= screen.availWidth;
	var alto= screen.availHeight;
	var izq= (ancho-550)/2;
	var arr= (alto-415)/2;
	var popwin = window.open("enviar_consulta.php?id="+id+"&tbl="+tbl,"w1","width=550,height=415,left="+izq+",top="+arr);
	popwin.focus();
	
}