function afoto(url,width,height){
var Width=width; // Ancho del pop-up
var Height=height; // Alto del pop-up
var Left = (window.screen.width-Width)/2;
var Top = (window.screen.height-Height)/2;
if(width>800){
Width=800;
Height=600;
}
var nombre_aux=url.split("\/");
var nombre=nombre_aux[3].split(".");
ventana=window.open(url,nombre[0],'toolbar=no, status=no, menubar=no, location=no, directories=no, resizable=yes, scrollbars=yes, width='+Width+',height ='+Height+',top='+Top+',left='+Left);
ventana.document.write('foto
');
}//pop