var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;

if (checkIt('konqueror')){
	browser = "Konqueror";
	OS = "Linux";
}
else if (checkIt('safari')) browser = "Safari"
else if (checkIt('omniweb')) browser = "OmniWeb"
else if (checkIt('opera')) browser = "Opera"
else if (checkIt('webtv')) browser = "WebTV";
else if (checkIt('icab')) browser = "iCab"
else if (checkIt('msie')) browser = "Internet Explorer"
else if (!checkIt('compatible')){
	browser = "Netscape Navigator"
	version = detect.charAt(8);
}
else browser = "An unknown browser";

/*alert ("browser : " + browser);*/

if (!version) version = detect.charAt(place + thestring.length);

if (!OS){
	if (checkIt('linux')) OS = "Linux";
	else if (checkIt('x11')) OS = "Unix";
	else if (checkIt('mac')) OS = "Mac"
	else if (checkIt('win')) OS = "Windows"
	else OS = "an unknown operating system";
}

/*alert ("OS : " + OS);*/

function checkIt(string){
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
}

var l='<LINK rel="stylesheet" type="text/css" href="/css/';
var c='.css">';
var cssToUse='';

if ((OS=="Mac")&&((browser=="Internet Explorer")||(browser=="Opera")||(browser=="Safari"))){
	cssToUse="styles_header_without_dropDown";
	/*alert("css used is : " + l+cssToUse+c);*/
}
else{
	cssToUse="styles_header_with_dropDown";
	/*alert("css used is : " + l+cssToUse+c);*/
}
document.write(l+cssToUse+c);