function win ( pwidth, pheight, pleft, ptop, filename)
 {
   var windowprops = "scrollbars=yes, resizable=yes" +
                                         ",left=" + pleft + ",top=" + ptop +
                                         ",width=" + pwidth + ",height=" + pheight;
   linkWindow = window.open(filename,"",windowprops);
   if (linkWindow.opener == null) {
         linkWindow.opener = self;
    }
    linkWindow.focus();
}