// JavaScript Document
function cerrarPopup(pid)
   {
      document.getElementById(pid).style.visibility = 'hidden';      
   }

 function pop(a,w,h)
 {
  url = a.getAttribute("href");
  window.open(url,'popup_p','toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width='+w+',height='+h);
  return false;
 }