function OpenFile(filename)
{
  var p;
  if (filename=='pgt')
      p = 'videowinguard.htm';
  if (filename=='impact')
      p = 'videoimpact.htm';
  var win1;
  win1 = window.open(p,"","width=420,height=400,left=30,top=30,scrollbars=yes,menubar=yes,resizable=yes");
        
}