function popupWin(href, windowname, wd, ht) {
  var lft = Math.floor((screen.width - wd) / 2);
  var tp = Math.floor((screen.height - ht) / 2);
  var wstat = 'resizable=yes,scrollbars=yes,status=no,width='+wd+',height='+ht+',left='+lft+',top='+tp;
  var w = window.open(href,windowname,wstat);
  w.focus();
}

function popupWinNoScroll(href, windowname, wd, ht) {
  var lft = Math.floor((screen.width - wd) / 2);
  var tp = Math.floor((screen.height - ht) / 2);
  var wstat = 'resizable=No,scrollbars=no,status=no,width='+wd+',height='+ht+',left='+lft+',top='+tp;
  var w = window.open(href,windowname,wstat);
  w.focus();
}