var newWin = null;
var bName = navigator.appName;
var bVer = parseInt(navigator.appVersion);

// Center the pop-up window for 4.0 and above browsers. 
// Make sure to account for browser chrome when doing the subtraction.

  function openPopup(url) {
  
    if (document.getElementById || document.all || document.layers) {
      var screenWidth = screen.availWidth;
      var screenHeight = screen.availHeight;
      var xPos = (screenWidth - 300)/2;
      var yPos = (screenHeight - 340)/2;

    newWin = window.open(url,'disclaimer','height=380,width=310,toolbar=no,menubar=no,status=no,location=no,scrollbars=yes,left=' + xPos + ',top=' + yPos + '');
    }

    else {
        newWin = window.open(url,'disclaimer','height=380,width=310,toolbar=no,menubar=no,status=no,location=no,scrollbars=yes,left=' + xPos + ',top=' + yPos + '');
    }  
}    


  function closeWin() {
    if (newWin != null && newWin.open) newWin.close();
}
    window.onfocus=closeWin;