function openTopofile(download) {
 wid = 375;
 hi = 230;
 maxwid = screen.availWidth - 11;
 maxhi = screen.availHeight - 30;
 if (wid > maxwid) {
  wid = maxwid;
  leftpos = 0
 } else {
  leftpos = (maxwid) ? (maxwid - wid)/2 : 0
 }
 if (hi > maxhi) {
  hi = maxhi;
  toppos = 0;
 } else {
  toppos = (maxhi) ? (maxhi - hi)/2 : 0
 }
 self.name = "main";
 window.open('/WClibrary/includes/zpop_topofile.asp?download=' + download, 'topo',"width="+wid+",height="+hi+",top="+toppos+",left="+leftpos+",toolbar=no,titlebar=no,location=no,directories=no,status=no,menubar=no,resizable=no,copyhistory=no,fullscreen=no,scrollbars=no");
}