/* STYLESHEET SNIFFER */

function setActiveStyleSheet(title) {
   var i, a, main;
   for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
     if(a.getAttribute("rel").indexOf("style") != -1
        && a.getAttribute("title")) {
       a.disabled = true;
       if(a.getAttribute("title") == title) a.disabled = false;
     }
   }
}

/* BROWSER DETECTION AND CSS SELECTOR */

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";

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";
}

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

if (OS == "Mac" )
{ setActiveStyleSheet('osx'); }

else if (OS != "Mac" && version >= 6 && browser == "Internet Explorer" && ((screen.width >= 1024 ) || (screen.height >= 768))) 
{ setActiveStyleSheet('iesix'); }

else if (OS != "Mac" && version >= 6 && browser == "Internet Explorer" && ((screen.width < 1024 ) || (screen.height < 768))) 
{ setActiveStyleSheet('iesixlo'); }

else if (OS != "Mac" && version <= 5.5 && browser == "Internet Explorer" && ((screen.width >= 1024 ) || (screen.height >= 768)))
{ setActiveStyleSheet('iefive'); }

else if (OS != "Mac" && version <= 5.5 && browser == "Internet Explorer" && ((screen.width < 1024 ) || (screen.height < 768)))
{ setActiveStyleSheet('iefivelo'); }

else if (browser != "Internet Explorer" && ((screen.width < 1024 ) || (screen.height < 768)))
{ setActiveStyleSheet('iesixlo'); }

else { setActiveStyleSheet('iesix'); }