function openCenterWin(url, w, h)
{
   var win = window.open(url, 'win',
               'toolbar=no,location=no,menubar=no,scrollbars=no,' +
               'width=' + w + ',' + 'height=' + h
	      );

   if (win != null)
   {
      var x = (screen.availWidth - w) / 2;
      var y = (screen.availHeight - h) / 2;
      win.moveTo(x, y);
      win.focus();
   }
}


function openWin(url)
{
   var x = screen.availWidth;
   var y = screen.availHeight;
   var win = window.open(url, 'win', 'width=' + x + ',height=' + y + ',toolbar=no,location=no,menubar=no,scrollbars=yes');
   win.moveTo(0, 0);
}