function showExamples(year) {
var url = '';

   if (document.forms[0].display[0].checked) {
      url = 'autoscreens.php?yr=' + year;
   } else {
      url = 'screens.php?yr=' + year + '&seq=1';      
   }

//   alert(url);

   window.open(url,
            'forms',
            'scrollbars=yes,resizable=yes,width=800,height=600');
}