function PopupLink(a,width,height,status){
   if(!width)  width  = '350';
   if(!height) height = '490';
   if(!status) status = 'no';

   return !window.open(
      a.href,
      a.target,
      "width="+width+", height="+height+", scrollbars=no, status="+status+", resizable=no"
   );
}