function roll(img_name, img_src)
   {
   document[img_name].src = img_src;
   }

function CalendarDetail(calidx)
 {
  var winW = 400;
  var winH = 400;
  var winX = (screen.availWidth - winW) / 2;
  var winY = (screen.availHeight - winH) / 2;

  var features = 'left='+winX+',top='+winY+',width='+winW+',height='+winH+',toolbar=0,location=0,status=0,scrollbars= 1,resizable=0';
  
  mywindow = window.open ("../Events/CalendarDetail.aspx?CALIDX=" + calidx,  "mywindow", features);
  mywindow.moveTo(winX,winY);
 }