function getInternetExplorerVersion()
// Returns the version of Internet Explorer or a -1
// (indicating the use of another browser).
{
  var rv = -1; // Return value assumes failure.
  if (navigator.appName == 'Microsoft Internet Explorer')
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  return rv;
}

function checkVersion()
{
  var ver = getInternetExplorerVersion();

  return ver;
}

function getScreenXRes()
{
	var scrxres = screen.width;
	return scrxres;
}

function getScreenYRes()
{
	var scryres = screen.height;
	return scryres;
}