if (! (document.layers && parseFloat(navigator.appVersion) <= 4.08))
{
 if (document.getElementById && document.styleSheets)
  document.write('<link rel="StyleSheet" href="style/css2.css" type="text/css" />');
 else if (document.layers)
 {
  document.write('<link rel="StyleSheet" href="style/css1base.css" media="screen" type="text/css" />'); 
  document.write('<link rel="StyleSheet" href="style/cssnn4.css" media="screen" type="text/css" />');
 }
}