var navVer = navigator.appVersion;
if(navVer.substr(0,3) >= 4)
if((navigator.appName=="Netscape") && (parseInt(navigator.appVersion)==4)) {
document.write('<' + 'script language="JavaScript" type="text/javascript" src="http://trekweb.com/menu/nsmenu_nov04.js"><\/script\>');
} else {
document.write('<' + 'script language="JavaScript" type="text/javascript" src="http://trekweb.com/menu/iemenu_nov04.js"><\/script\>');
}