function popupFlash(url)
{
   var width=500;
   var height=400;
   var top = (screen.availHeight - height) / 2;
   var left = (screen.availWidth - width) / 2;
   window.open( url, "_gallery", "menubar=no,resizable=yes,width="+width+",height="+height+",top="+top+",left="+left );
}