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="dhtml/nsmenu.js"><\/script\>');
else
document.write('<'+'script language="JavaScript" type="text/javascript" src="dhtml/iemenu.js"><\/script\>');