function popup(url,title,x,y,status,toolbar) {

   if (x > (screen.width - 40)) x = (screen.width - 40);

   if (y > (screen.height - 150)) y = (screen.height - 150);
   winx = (screen.width-x) / 2;
   winy = (screen.height-y) / 2 - 80;
   if (winx < 0) winx = 0;
   if (winy < 0) winy = 0;
   popWindow = window.open( url , title ,"toolbar=no,menubar=no,location=no,directories=no,scrollbars=yes,resizable=yes,status=yes,top="+winy+",left="+winx+",width="+x+",height="+y);
   popWindow.focus();
   return;
}