function WolfTracks() 
{

	//Platform 
	var Mac_OS = (navigator.userAgent.indexOf("mac") != -1) || (navigator.userAgent.indexOf("Mac") != -1); 
	var Linux_OS = (navigator.userAgent.indexOf("Linux") != -1); 
	var Win_OS = (navigator.userAgent.indexOf("Win") != -1); 
	//if the OS isn't win mac or linux 
	var Other_OS = (!Win_OS && !Linux_OS && !Mac_OS != -1); 
		
	//Browsers 
	var Opera = (navigator.userAgent.indexOf('Opera') != -1); 
	var MSIE = (navigator.userAgent.indexOf('MSIE') != -1); 
	var Moz = (navigator.userAgent.indexOf('Gecko') != -1); 
	var NS = (navigator.userAgent.indexOf('Netscape') != -1 && navigator.userAgent.indexOf('Gecko') != -1); 
	if(document.layers){var Nav4="true";};  
	var Konqueror = (navigator.userAgent.indexOf('Konqueror') != -1);  
	//Opera workaround - default install of opera identifies as both opera and msie 
	if (Opera && MSIE || Opera){var Opera="true"; MSIE="false";}  
	if (MSIE && !Opera){MSIE="true";} 
	//if its some other browser 
	var Other_Browser = (!Opera && !MSIE && !Moz && !NS && !Nav4 && !Konqueror != -1); 

	var os = "";
	if(Linux_OS){os = "L"};
	if(Mac_OS){os = "M"};
	if(Win_OS){os = "W"};
	if(Other_OS){os = ""};
	
	var br = "";
	if(Opera){br = "O"};
	if(MSIE){br = "I"};
	if(Moz){br = "G"};
	if(NS){br = "N"};
	if(Konqueror){br = "K"};
	if(Other_Browser){br = ""};
			
	var wt="/wolftracks.asp?WTID="+WTID;
	wt+="&width="+screen.width;
	wt+="&height="+screen.height;
	wt+="&ColDep="+screen.colorDepth;	
	wt+="&os="+os;
	wt+="&br="+br;	

	document.write('<img border="0" width="0" height="0" src="'+wt+'">');	
}
WolfTracks();