var SEP = '|';
	var PAIR = '=';


// browser detection

	ua = navigator.userAgent.toLowerCase();
	opera = ua.indexOf("opera") >= 0;
	ie = ua.indexOf("msie") >= 0 && !opera;
	iemac = ie && ua.indexOf("mac") >= 0;
	moz = ua.indexOf("mozilla") && !ie && !opera;
	os = navigator.platform;

// misc. functions

	function activeXDetect(componentClassID) {
	   componentVersion = document.body.getComponentVersion('{'+componentClassID+'}','ComponentID');
	   return (componentVersion != null) ? componentVersion : false;
	}
	
	// this method is not used.
	function extractVersions(s) {
		extractedVersions = "";
	    // remove all but 0-9 and '.', '_', ',' separators.
		for (var i = 0; i < s.length; i++) {
			charAtValue = s.charAt(i);
			if ((charAtValue >= '0' && charAtValue <= '9') || charAtValue == '.' || charAtValue == '_' || charAtValue == ',')
				extractedVersions += charAtValue;
		}
		return extractedVersions;
    }

	function stripIllegalChars(value) {
		t = "";
		//first we need to escape any "\n" or "/" or "\"
		value = value.toLowerCase();
		for (i = 0; i < value.length; i++) {
			if (value.charAt(i) != '\n' && value.charAt(i) != '/' && value.charAt(i) != "\\")
			{
				t += value.charAt(i);
			}
			else if (value.charAt(i) == '\n')
			{
				t += "n";
			}
		}
		return t;
	}
	
	function stripFullPath(tempFileName, lastDir) {
		fileName = tempFileName;

		//anything before the last lastDir will be lost
		filenameStart = 0;
		filenameStart = fileName.lastIndexOf(lastDir);

		if (filenameStart < 0)
			return tempFileName;
		filenameFinish = fileName.length;
		
		fileName = fileName.substring(filenameStart + lastDir.length, filenameFinish);

		return fileName;
	}	

// fingerprinting functions

	function fingerprint_browser () {
		t = ua +SEP+ navigator.appVersion +SEP+ navigator.platform;
		if (ie) {
			t += SEP + navigator.appMinorVersion +SEP+ navigator.cpuClass +SEP+ navigator.browserLanguage;
			t += SEP + ScriptEngineBuildVersion();
		} else if (moz) {
			t += SEP + navigator.language;
		}
		return t;
	}
	
	function fingerprint_display () {
		t = "";
		if (self.screen) {
			t += screen.colorDepth +SEP+ screen.width +SEP+ screen.height +SEP+ screen.availHeight;
		}
		return t;
	}
	
	function fingerprint_software () {
		t = "";
		isFirst = true;
		
		/*
		Create a Hashtable of mozilla components
		*/		
		var ht = new Hashtable();
		ht.put('npnul32.dll','def'); 	 	// Default netscape plugin
		ht.put('npqtplugin6.dll','qt6'); 	// Quicktime 6.5.1
		ht.put('npqtplugin5.dll','qt5'); 	// Quicktime 6.5.1
		ht.put('npqtplugin4.dll','qt4'); 	// Quicktime 6.5.1
		ht.put('npqtplugin3.dll','qt3'); 	// Quicktime 6.5.1
		ht.put('npqtplugin2.dll','qt2'); 	// Quicktime 6.5.1
		ht.put('npqtplugin.dll','qt1');  	// Quicktime 6.5.1	
		ht.put('nppdf32.dll','pdf'); 	 	// Adobe Acrobat				
		ht.put('NPSWF32.dll','swf'); 	 	// Macromedia Flash 
		ht.put('NPJava11.dll','j11');    	// Java 1.4.2_02
		ht.put('NPJava12.dll','j12');    	// Java 1.4.2_02
		ht.put('NPJava13.dll','j13');    	// Java 1.4.2_02
		ht.put('NPJava32.dll','j32');    	// Java 1.4.2_02
		ht.put('NPJava14.dll','j14');    	// Java 2 5.0 Update 4
		ht.put('npoji600.dll','j61');    	// Java 2 5.0 Update 4
		ht.put('NPJava131_16.dll','j16');   // Java 1.3.1_16 
		ht.put('NPOFFICE.DLL','mso');    	// Microsoft Office 2003				
		ht.put('npdsplay.dll','wpm');		// Windows Media Player		
		ht.put('npwmsdrm.dll','drm');    	// Windows DRM
		ht.put('npdrmv2.dll','drn');    	// Netscape DRM
		ht.put('nprjplug.dll','rjl');    	// Real Jukebox	
		ht.put('nppl3260.dll','rpl');    	// Real Player Live Connect 
		ht.put('nprpjplug.dll','rpv');    	// Real Player Version				
		ht.put('npchime.dll','chm');		// Chime
		ht.put('npCortona.dll','cor');    	// Cortina 
		ht.put('np32dsw.dll','dsw');    	// Macromedia Director					
		ht.put('np32asw.dll','asw');		// Macromedia Authorware
		
		
		if (navigator.plugins.length > 0) {			
			// since opera will give the full path of the file, we will
			// just extract the filenames, ignoring descripton and length since filenames are distinguished enough
			temp = "";
			moz = "";
			key = "";
			lastDir = "Plugins";
			for (i = 0; i < navigator.plugins.length; i++) {				
				plugin = navigator.plugins[i];
				moz = stripFullPath(plugin.filename, lastDir);
				if (isFirst==true) 
				{										
					key = ht.containsKey(moz);
					if(key)
					{
						temp += ht.get(moz) + PAIR + moz;
						isFirst=false;							
					}	
					else
					{
						//temp += "unknown" + PAIR + moz;		
						temp = "";
						isFirst=false;				
					}
					
				}
				else 
				{

					key = ht.containsKey(moz);
					if(key)
					{
						temp += SEP + ht.get(moz) + PAIR + moz;
					}
					else
					{
						//temp += SEP + "unknown" + PAIR + moz;
						temp += "";
					}				
				}
			}
			t = stripIllegalChars(temp);		

		}
		else if (navigator.mimeTypes.length > 0)		 
		{

		
			key = "";
			for (i = 0; i < navigator.mimeTypes.length; i++) 
			{			
				mimeType = navigator.mimeTypes[i];												
				if (isFirst==true) 
				{
					key = ht.containsKey(mimeType);
					if(key)
					{
						t += ht.get(mimeType) + PAIR + mimeType;
						isFirst=false;
					}	
					else 
					{
						t += "unknown" + PAIR + mimeType;
						isFirst=false;
					}
				}
				else 
				{
					key = ht.containsKey(mimeType);
					if(key)
					{
						t += SEP + ht.get(mimeType) + PAIR + mimeType;
					}
					else
					{
						//t += SEP + "unknown" + PAIR + mimeType;
						temp += "";
					}				
				}
		}	
		
		}	
		else if (ie) {
		

		
		names = new Array(
		"abk", // Address Book
		"wnt", // Windows Desktop Update NT
		"aol", // AOL ART Image Format Support
		"arb", // Arabic Text Display Support
		"chs", // Chinese (Simplified) Text Display Support
		"cht", // Chinese (traditional) Text Display Support
		"dht", // Dynamic HTML Data Binding 
		"dhj", // Dynamic HTML Data Binding for Java
		"dan", // DirectAnimation
		"dsh", // DirectShow	
		"heb", // Hebrew Text Display Support
		"ie5", // Internet Explorer 5 Browser
		"icw", // Internet Connection Wizard
		"ibe", // Internet Explorer Browsing Enhancements 
		"iec", // Internet Explorer Classes for Java
		"ieh", // Internet Explorer Help
		"iee", // Internet Explorer Help Engine
		"jap", // Japanese Text Display Support  
		"krn", // Korean Text Display Support
		"lan", // Language Auto-Selection
		"swf", // Macromedia Flash
		"shw", // Macromedia Shockwave Director
		"msn", // MSN Messenger Service
		"wmp", // Windows Media Player
		"obp", // Offline Browsing Pack 
		"oex", // Outlook Express 
		"net", // NetMeeting NT
		"pan", // Pan-European Text Display Support
		"thi", // Thai Text Display Support
		"tks", // Task Scheduler
		"uni", // Uniscribe 	
		"vtc", // Vector Graphics Rendering (VML)
		"vnm", // Vietnamese Text Display Support
		"mvm", // Microsoft virtual machine
		"vbs", // Visual Basic Scripting Support
		"wfd"  // Web Folders		
		);	
		
		components = new Array(
		"7790769C-0471-11D2-AF11-00C04FA35D02", 
		"89820200-ECBD-11CF-8B85-00AA005B4340", 
		"47F67D00-9E55-11D1-BAEF-00C04FC2D130", 
		"76C19B38-F0C8-11CF-87CC-0020AFEECF20", 
		"76C19B34-F0C8-11CF-87CC-0020AFEECF20",  
		"76C19B33-F0C8-11CF-87CC-0020AFEECF20",  
		"9381D8F2-0288-11D0-9501-00AA00B911A5", 
		"4F216970-C90C-11D1-B5C7-0000F8051515", 
		"283807B5-2C60-11D0-A31D-00AA00B92C03", 
		"44BBA848-CC51-11CF-AAFA-00AA00B6015C", 
		"76C19B36-F0C8-11CF-87CC-0020AFEECF20", 
		"89820200-ECBD-11CF-8B85-00AA005B4383", 
		"5A8D6EE0-3E18-11D0-821E-444553540000", 
		"630B1DA0-B465-11D1-9948-00C04F98BBC9", 
		"08B0E5C0-4FCB-11CF-AAA5-00401C608555", 
		"45EA75A0-A269-11D1-B5BF-0000F8051515", 
		"DE5AED00-A4BF-11D1-9948-00C04F98BBC9", 
		"76C19B30-F0C8-11CF-87CC-0020AFEECF20", 
		"76C19B31-F0C8-11CF-87CC-0020AFEECF20", 
		"76C19B50-F0C8-11CF-87CC-0020AFEECF20", 
		"D27CDB6E-AE6D-11CF-96B8-444553540000",
		"2A202491-F00D-11CF-87CC-0020AFEECF20", 
		"5945C046-LE7D-LLDL-BC44-00C04FD912BE", 
		"22D6F312-B0F6-11D0-94AB-0080C74C7E95", 
		"3AF36230-A269-11D1-B5BF-0000F8051515", 
		"44BBA840-CC51-11CF-AAFA-00AA00B6015C", 
		"44BBA842-CC51-11CF-AAFA-00AA00B6015B", 
		"76C19B32-F0C8-11CF-87CC-0020AFEECF20", 
		"76C19B35-F0C8-11CF-87CC-0020AFEECF20", 
		"CC2A9BA0-3BDD-11D0-821E-444553540000", 
		"3BF42070-B3B1-11D1-B5C5-0000F8051515", 
		"10072CEC-8CC1-11D1-986E-00A0C955B42F", 
		"76C19B37-F0C8-11CF-87CC-0020AFEECF20", 
		"08B0E5C0-4FCB-11CF-AAA5-00401C608500", 
		"4F645220-306D-11D2-995D-00C04F98BBC9", 
		"73FA19D0-2D75-11D2-995D-00C04F98BBC9" 		
		);

		document.body.addBehavior("#default#clientCaps")
		for (i = 0; i < components.length; i++) {
		
			ver = activeXDetect(components[i]);	
			name = names[i];
			if (ver) {
				if (isFirst==true) 
				{					
					t += name + PAIR + ver;
					isFirst=false;
				} 
				else 
				{
					t += SEP + name + PAIR + ver;
				}
			}
			else 
			{
				t +="";
				isFirst=false;
			}
		}
	}
	return t;
}
	
	function fingerprint_timezone () {					
		var gmtHours = (new Date().getTimezoneOffset()/60)*(-1);				
		return gmtHours;
	}
	
	function fingerprint_language () {					
		var lang;	

		if (typeof(navigator.language) != "undefined")
		{					
			lang = "lang" + PAIR + navigator.language +SEP;						
		}
		else if (typeof(navigator.browserLanguage) != "undefined")
		{			
			lang = "lang" + PAIR + navigator.browserLanguage + SEP;							
		}
		else			
		{
			lang = "lang" + PAIR + "" + SEP;								
		}
		
		(typeof(navigator.systemLanguage) != "undefined") ? lang += "syslang" + PAIR + navigator.systemLanguage + SEP : lang += "syslang" + PAIR + "" + SEP;

		(typeof(navigator.userLanguage) != "undefined") ? lang += "userlang" + PAIR + navigator.userLanguage : lang += "userlang" + PAIR + "";
	
		
		return lang;
		
	}
			
		
// async post methods

	function form_add_data(fd, name, value) {
		if (fd && fd.length > 0) {
			fd += "&";
		}
		else {
			fd = "";
		}
		
		fd += name + '=' + escape(value);
		return fd;
	}
	
	function form_add_fingerprint(fd, name, value) {
		fd = form_add_data(fd, name + "d", value);
		return fd;
	}


// fingerprint communiation
		
	function asyncpost_fingerprints(url) {
		var xmlhttp = false;
		/*@cc_on @*/
		/*@if (@_jscript_version >= 5)
		// JScript gives us Conditional compilation, we can cope with old IE versions.
		// and security blocked creation of the objects.
		 try {
		  xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		 } catch (e) {
		  try {
		   xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		  } catch (E) {
		   xmlhttp = false;
		  }
		 }
		@end @*/

		if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
		  xmlhttp = new XMLHttpRequest();
		}
		if (!xmlhttp) return false;
		
		xmlhttp.open("POST", url, true);
		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		
		var fd;
		fd = form_add_fingerprint(fd, "fp_browser", fingerprint_browser());
		fd = form_add_fingerprint(fd, "fp_display", fingerprint_display());
		fd = form_add_fingerprint(fd, "fp_software", fingerprint_software());
		fd = form_add_fingerprint(fd, "fp_timezone", fingerprint_timezone());
		fd = form_add_fingerprint(fd, "fp_language", fingerprint_language());

		xmlhttp.send(fd); // fire and forget
		return true;
	}
	
	function post_fingerprints() {
		document.forms[0].fp_browser.value = fingerprint_browser();
		document.forms[0].fp_screen.value = fingerprint_display();
		document.forms[0].fp_software.value = fingerprint_software();
		document.forms[0].fp_timezone.value = fingerprint_timezone();
		document.forms[0].fp_language.value = fingerprint_language();

		return true;
	}	
	
	function add_fingerprints() {
		t = "fp_browser=" + fingerprint_browser("") + "&fp_display=" + fingerprint_display("") + "&fp_software=" + fingerprint_software("");
				+ "&fp_software=" + fingerprint_software("")+ "&fp_timezone=" + fingerprint_timezone("")+ "&fp_language=" + fingerprint_language("");

		return t;
	}
	
function Hashtable()
{
    var keysToIndex = {__indexToValue:[],__indexToKeys:[]};
    var activeEnum = [];
    var tableLength = 0;
    var self = this;
    
    /*
    This inner Object constructor is used to implement a Java
    style Enumerator (and Iterator) Object.
    */
    function Enumeration(arrNm)
    {
        var lastIndex = null;
        var enumIndex = 0;
        while(typeof activeEnum[enumIndex] == 'number')enumIndex += 1;
        activeEnum[enumIndex] = 0;
        
        /*
        Returns true if this Enumerator/ has another entry to
        return, else returns false.
        */
        this.hasNext = this.hasMoreElements = function(){
            if(activeEnum[enumIndex] < tableLength){
                return true;
            }else{
                if(typeof activeEnum[enumIndex] == 'number'){
                    activeEnum[enumIndex] = null;
                }
                return false;
            }
        };
        
        /*
        Returns the next item from this Enumerator/Iterator (key
        or value, depending on whether it was created with the keys
        or elements methods).
        */
        this.next = this.nextElement = function(){
            if(this.hasNext){
                lastIndex = activeEnum[enumIndex];
                return keysToIndex[arrNm][activeEnum[enumIndex]++];
            }else{
                return null;
            }
        };
        
        /*
        Removes the last entry (key/value pair) accessed with the
        next or nextElement methods of this Enumerator/Iterator
        (if any). The key/value pair is removed regardless of whether
        the Enumerator/Iterator was accessing keys or values.
        */
        this.remove = function(){
            if(typeof lastIndex == 'number'){
                self.remove(keysToIndex.__indexToKeys[lastIndex]);
                lastIndex = null;
            }
        	};
    	};
    	// End Enumeration
    
    /*
    Returns the value mapped to the provided (String) key, or null
    if the key is not mapped to a value.
    */
    this.get = function(key){
        if(typeof keysToIndex[key] == 'number'){
            return keysToIndex.__indexToValue[keysToIndex[key]];
        }else{
            return null;
        }
    };
    /*
    Adds the value provided to this Hashtable mapped to the key
    provided.
    */
    this.put = function(key, value){
        if(typeof keysToIndex[key] == 'number'){
            keysToIndex.__indexToValue[keysToIndex[key]] = value;
        }else{
            keysToIndex[key] = tableLength;
            keysToIndex.__indexToValue[tableLength] = value;
            keysToIndex.__indexToKeys[tableLength++] = key;
        }
    };
    /*
    Removes the key and any value mapped to it from this
    Hashtable.
    */
    this.remove = function(key){
        var remIndex = keysToIndex[key];
        if(typeof remIndex == 'number'){
            delete keysToIndex[key];
            tableLength -= 1;
            for(var c = remIndex;c < tableLength;c++){
                keysToIndex.__indexToValue[c] =
                                     keysToIndex.__indexToValue[c+1];
                keysToIndex[(keysToIndex.__indexToKeys[c] =
                                keysToIndex.__indexToKeys[c+1])] = c;
            }
            for(var c = 0;c < activeEnum.length;c++){
                if((activeEnum[c])&&(remIndex < activeEnum[c])){
                    activeEnum[c] -= 1;
                }
            }
        }
    };
    /*
    Returns the length of this Hashtable.
    */
    this.size = function(){
        return tableLength;
    };
    
    /*
    This method is not intended for external use! use elements
    and keys methods instead.
    */
    this.__enumerate = function(type){
        return new Enumeration(type);
    };

	/*
	Returns an object that is similar to the Java Enumeration
	Interface, having hasMoreElements and nextElement Methods. This
	object also reproduces the Java Iterator interface, having methods
	hasNext, next and remove. This enumeration is of the values stored
	in the Hashtable.
	*/
	Hashtable.prototype.elements = function(){
    	return this.__enumerate('__indexToValue');
	}

	/*
	Returns an object that is similar to the Java Enumeration
	Interface, having hasMoreElements and nextElement Methods. This
	object also reproduces the Java Iterator interface, having methods
	hasNext, next and remove. This enumeration is of the keys stored
	in the Hashtable.
	*/
	Hashtable.prototype.keys = function(){
	    return this.__enumerate('__indexToKeys');
	}

	/*
	Removes all entry's from the Hashtable
	*/
	Hashtable.prototype.clear = function(){
    var e = this.keys();
    while(e.hasNext()){
        this.remove(e.next());
    	}
	}

	Hashtable.prototype.toString = function(){
    var n,e = this.keys();
    var st = '';
    while(e.hasNext()){
        n = e.next();
        st += n+' =&gt; '+this.get(n)+'\r\n';
    }
    return st;

	}

	/*
	Returns true if this Hashtable contains a value that is equal
	to the value provided, else returns false
	*/
	Hashtable.prototype.contains = function(testVal){
    var e = this.elements();
    while(e.hasNext()){
        if(e.next() == testVal)return true;
    }
    return false;

	}

	/*
	Returns true if this Hashtable contains a value that is equal
	to the value provided, else returns false.
	*/
	Hashtable.prototype.containsValue = Hashtable.prototype.contains;

	/*
	Returns true if this Hashtable contains a value mapped to
	the value provided, else returns false.
	*/
	Hashtable.prototype.containsKey = function(testKey){
    	return (this.get(testKey) != null);
	}

	/*
	Returns true if this Hashtable has zero entry's.
	*/
	Hashtable.prototype.isEmpty = function(){
    	return (this.size() == 0);
	}

	/*
	If the parameter provided is another Hashtable object
	then all of the key/value pairs from the provided Hashtable
	are added to this Hashtable.
	*/
	Hashtable.prototype.putAll = function(hTable){
    if(hTable.constructor == Hashtable){
        var n,e = hTable.keys();
        while(e.hasNext()){
            n = e.next();
            this.put(n, hTable.get(n));
        }
    	}
	}

	/*
	Returns a 'shallow' copy of this Hashtable.
	*/
	Hashtable.prototype.clone = function(){
    var ht = new Hashtable();
    ht.putAll(this);
    return ht;
	}

	/*
	Returns true if this Hashtable equals the parameter
	provided, else it returns false.
	*/
	Hashtable.prototype.equals = function(o){
    return (o == this);
	} 
}