//<!--
var popUpWin=0;

function displayCenterWindow(URLStr,windowname,width,height)
{
   var chasm = screen.availWidth;
   var mount = screen.availHeight;
   
   if (popUpWin) {
	    if(!popUpWin.closed) {
         popUpWin.focus();
         return;
      }
   }

   popUpWin = window.open(URLStr, windowname,'width=' + width + ',height=' + height +
              ',left=' + ((chasm - width - 10) * .5) + ',top=' + ((mount - height - 30) * .5) +
              ',resizable=yes,scrollbars=yes,menubar=no,toolbar=no');

   popUpWin.focus();
   popUpWin.opener = self;
}

//-->