function ct(pid,prod_url){
  var url = '/cgi-bin/ct.pl';
  var elem='link_'+pid;
  var working='Finding tickets <img src="/images/working.gif">';
  var params='pid='+pid;
  window.open (prod_url,"tickets_window");
  var ajax = new Ajax.Updater(
    {success: 'resultdiv'},
    url,
    {method: 'get', parameters: params, onLoading: function(t) {Element.update(elem,working)}  }
  );
} //end ct