function openWin(URL, win_width, win_height, description)
{
  features = "width=" + win_width + ",height=" + win_height + ",status=no,toolbar=no,menubar=no";
  image='<img src="'+URL+'">';
  itle='<html><head><title>' + description;
  myWin= open( "", "View", features );
  myWin.document.open();
  myWin.document.write(itle);
  myWin.document.write('</title></head><body style="margin:0px;">');
  myWin.document.write(image);
  myWin.document.write("</body></html>");
  myWin.document.close();  
}