mac=(navigator.appVersion.indexOf("Mac",0) !=-1)?true:false;
ie =(navigator.appName.charAt(0) == "M")?true:false;
nn6=(navigator.userAgent.indexOf("Netscape6/",0) !=-1)?true:false;
	if(mac){
		if(ie){
		document.write("<LINK REL=\"stylesheet\" HREF=\"css/style_mac.css\" TYPE=\"text/css\">");
		}else if(nn6){
		document.write("<LINK REL=\"stylesheet\" HREF=\"css/style_nn6.css\" TYPE=\"text/css\">");
		}
	}
	else{
	if(ie){
		document.write("<LINK REL=\"stylesheet\" HREF=\"css/style_win_ie.css\" TYPE=\"text/css\">");
		}else if(nn6){
		document.write("<LINK REL=\"stylesheet\" HREF=\"css/style_nn6.css\" TYPE=\"text/css\">");
		}
}