var agt=navigator.userAgent.toLowerCase();
var appVer = navigator.appVersion.toLowerCase();

var is_minor = parseFloat(appVer);
var is_major = parseInt(is_minor);

// Note: On IE, start of appVersion return 3 or 4
// which supposedly is the version of Netscape it is compatible with.
// So we look for the real version further on in the string
// And on Mac IE5+, we look for is_minor in the ua; since 
// it appears to be more accurate than appVersion - 06/17/2004

var is_mac = (agt.indexOf("mac")!=-1);
var iePos  = appVer.indexOf('msie');
if (iePos !=-1) {
   if(is_mac) {
	   var iePos = agt.indexOf('msie');
	   is_minor = parseFloat(agt.substring(iePos+5,agt.indexOf(';',iePos)));
   }
   else is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';',iePos)));
   is_major = parseInt(is_minor);
}

var is_konq = false;
var kqPos   = agt.indexOf('konqueror');
if (kqPos !=-1) {                 
   is_konq  = true;
   is_minor = parseFloat(agt.substring(kqPos+10,agt.indexOf(';',kqPos)));
   is_major = parseInt(is_minor);
}                          

var is_safari = ((agt.indexOf('safari')!=-1)&&(agt.indexOf('mac')!=-1))?true:false;
var is_khtml  = (is_safari || is_konq);

var is_opera = (agt.indexOf("opera") != -1);
var is_ie	= ((iePos!=-1) && (!is_opera) && (!is_khtml));

if (is_ie && is_major < 7) {
	//	document.write('<'+'link rel="stylesheet" type="text/css" href="/css/untracked-nopng-v3.css" media="screen" />');
} else {
	//	document.write('<'+'link rel="stylesheet" type="text/css" href="/css/untracked-v3.css" media="screen" />');
}