var CSSLink;
var NS4 = (document.layers) ? true : false;
var IE4 = (document.all && !document.getElementById) ? true : false;
var IE5 = (document.all && document.getElementById) ? true : false;
var NS6 = (!document.all && document.getElementById) ? true : false;

if (NS4){
	CSSLink = "<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" HREF=\"include/NS.css\">";
}
else if(NS6){
	CSSLink = "<LINK REL='STYLESHEET' TYPE='text/css' HREF='include/NS6.css'>";
}
else if(IE4 || IE5){
	CSSLink = "<LINK REL='STYLESHEET' TYPE='text/css' HREF='include/IE.css'>";
}

//if(NS4) 
//alert(CSSLink);
document.write(CSSLink);