var ns = (document.layers && !document.getElementById && navigator.appName=="Netscape")? 1:0;
var ie4 = (document.all || !document.getElementById && navigator.userAgent.indexOf("MSIE") > 1)? 1:0;
var ie5 = (navigator.appVersion.indexOf("MSIE 5") > 1 && navigator.userAgent.indexOf("MSIE") > 1 && document.getElementById)? 1:0;
var ie6 = (navigator.appVersion.indexOf("MSIE 6") > 1 && navigator.userAgent.indexOf("MSIE") > 1 && document.getElementById)? 1:0;
var ie = ie4 || ie5 || ie6;

if(ns){
document.write("<link rel='stylesheet' href='../css/main_nn.css'>");
}

if(ie){
document.write("<link rel='stylesheet' href='../css/main_ie.css'>");
}