var userAgent = navigator.userAgent.toLowerCase();
	var isIE = ((userAgent.indexOf("msie") != -1) && (userAgent.indexOf("opera") == -1) && (userAgent.indexOf("webtv") == -1));
	var sayuHiddenObjects = new Array();
var clientId = "1426";
var clickFD = 0;
var clickAdMax = 5;
var clickDisplay = "css";
var fraudCSS = "<div id=\"fraud_win_shadow\" style=\"z-index: 900; filter: alpha(opacity=60); left: 0px; top: 0px; width: 100%; height: 100%; 	position: absolute; background-color: #e1e1e1; moz-opacity: 0.6; opacity: 0.6\" onClick=\"hideSayuWin();return false;\"></div><div id=\"fraud_win\" style=\"z-index: 1000; position: absolute; top: 95px; left: 155px; width: 622px; height: 366px; background: #dadada; border: 1px solid #cacaca;\"><div style=\"position: relative; bottom: 5px; right: 5px; width: 622px; height: 366px; background: #FFF8CA url(http://www.sayu.co.uk/images/bgr_div_small.gif) repeat-x top; border: 1px solid #00CBFC;\"><div align=\"right\"><a href=\"#\" onClick=\"hideSayuWin();return false;\"><img style=\"margin: 10px 10px 5px 0px;\" src=\"http://www.sayu.co.uk/images/button-close.gif\" width=\"18\" height=\"18\" border=\"0\" alt=\"\"></a></div><div style=\"padding: 0px 35px 0px 30px; font: 14px Arial, Helvetica, sans-serif; text-align:justify;\">Thank you for visiting our website - we are very glad you find it useful.<br><br>We have noticed that you have visited our site many times recently by clicking on adverts.  In order to keep costs down and make sure that we can pass the savings on to you, our customer, we would like to ask that you bookmark our site.<br><br>To bookmark our site, please <a href=\"javascript:window.external.AddFavorite(location.href, document.title);\" style=\"color: #468fd3; font: 14px Arial, Helvetica, sans-serif;\">click here</a>.<br><br>Please note that your IP address has been logged: 18.117.196.0</div><div align=\"right\"><a href=\"#\" onClick=\"hideSayuWin();return false;\"><img style=\"margin: 40px 40px 0px 0px;\" src=\"http://www.sayu.co.uk/images/button-continue_to_site.gif\" width=\"192\" height=\"45\" border=\"0\" alt=\"\"></a></div><div align=\"left\" style=\"font: 10px Arial, Helvetica, sans-serif;\"><img style=\"margin: 0px 10px 0px 30px;\" src=\"http://www.sayu.co.uk/images/sayu-defender_y.gif\" width=\"69\" height=\"89\" align=\"absmiddle\" alt=\"\">Invalid click detection provided by Sayu Ltd. <a href=\"http://www.sayu.co.uk\" style=\"color: #000; font: 10px Arial, Helvetica, sans-serif;\">www.sayu.co.uk</a></div></div></div>";
var scriptURL = "http://www.sayutracking.co.uk/";

	var parentId = "";
	var visitId  = "";
	var visitNo  = "";
	var currentURL = parent.location.href;
	var pageURL = window.location.href;
	if (currentURL == "") {
		currentURL = pageURL;
	}
	var urlParam = currentURL;
	var referrerURL = parent.document.referrer;
	if (referrerURL == "") {
		referrerURL = document.referrer;
	}
	var queryParams = new Array();
	var kwParam = ""; var flParam = "";	var ciParam = ""; var networkParam = ""; var tfParam = ""; var kwIdParam = "";var pmParam = "";
	var visitId = getSayuCookie("sessionVisit" + clientId);
	var cookieVisit = getSayuCookie("cookieVisit" + clientId);
	if (cookieVisit != "") {
		var visitInfo = cookieVisit.split("|");
		parentId = visitInfo[0];
		visitNo = parseInt(visitInfo[1]);
	} else {
		visitNo = 0;
	}
	// new visit
	if (visitId == "") { 
		visitId = "0"; visitNo++;
	}
	// count clicks
	var clickNumber = parseInt(getSayuCookie("sessionClick" + clientId));
	if (isNaN(clickNumber) || clickNumber == "" || clickNumber == 0) { 
		clickNumber = 1; 
	} else {
		clickNumber = clickNumber + 1;
	}
	setSayuCookie("sessionClick" + clientId, clickNumber, 0);

	var dn            = getSayuDomain();
	var questionMark  = currentURL.indexOf("?");
	if (questionMark == -1) {
		questionMark  = currentURL.indexOf("#");
	}
	var slashPosition = currentURL.lastIndexOf("/");
	var pageName      = "";
	if (questionMark != -1) {
		pageName = currentURL.substring(slashPosition + 1, questionMark);
		var queryString = currentURL.substring(questionMark + 1, currentURL.length);
		var queryParts = queryString.split("&");
		for (var i = 0; i < queryParts.length; i++) {
			var paramName  = ""; var paramValue = "";
			var queryPart = queryParts[i];
			var equalSign = queryPart.indexOf("=");
			if (equalSign == -1) {
				paramName = queryPart;
			} else {
				paramName  = queryPart.substring(0, equalSign);
				if (paramName.length > 4 && paramName.substring(0, 4) == "amp;") {
					paramName = paramName.substring(4);
				}
				paramValue = unescape(queryPart.substring(equalSign + 1, queryPart.length));
				queryParams[paramName] = paramValue;
				if (paramName == "kw") {
					kwParam = paramValue;
				} else if (paramName == "fl" && flParam == "") {
					flParam = paramValue;
				} else if (paramName == "ci" && ciParam == "") {
					ciParam = paramValue;
				} else if (paramName == "network" && networkParam == "") {
					networkParam = paramValue;
				} else if (paramName == "pm" && pmParam == "") {
					pmParam = paramValue;
				} else if (paramName == "testfraud") {
					tfParam = paramValue;
				} else if (paramName == "OVKEY") {
					// Yahoo Search Marketing tracking
					kwParam = paramValue;
					//if (flParam == "") {
						flParam = 10000;
					//}
				} else if (paramName == "OVADID") {
					// Yahoo Search Marketing tracking
					ciParam = paramValue;
				} else if (paramName == "OVMTC") {
					// Yahoo Search Marketing tracking
					networkParam = (paramValue == "content")?"c":"s";
				} else if (paramName == "OVKWID") {
					kwIdParam = paramValue;
				}
			}
		}
	} else {
		pageName = currentURL.substring(slashPosition + 1, currentURL.length);
	}
	if (queryParams["clear_sayu_cookies"] && queryParams["clear_sayu_cookies"] == 1) {
		setSayuCookie("cookieAdClick" + clientId, "", 0);
		setSayuCookie("cookieFl" + clientId, "", 0);
		setSayuCookie("cookieKw" + clientId, "", 0);
		setSayuCookie("cookieCi" + clientId, "", 0);
		setSayuCookie("cookieNetwork" + clientId, "", 0);
		setSayuCookie("cookieKwId" + clientId, "", 0);
		setSayuCookie("cookiePm" + clientId, "", 0);
		setSayuCookie("sessionFl" + clientId, "", 0);
		setSayuCookie("sessionKw" + clientId, "", 0);
		setSayuCookie("sessionCi" + clientId, "", 0);
		setSayuCookie("sessionNetwork" + clientId, "", 0);
		setSayuCookie("sessionKwId" + clientId, "", 0);
		setSayuCookie("sessionPm" + clientId, "", 0);
	}
	var fraudParam = 0; var adClick = 0;
	if (queryParams["sayu_transfer"] && queryParams["sayu_transfer"] == 1) {
		// get transfered parameters
		visitId = queryParams["sayu_vid"];
		parentId = queryParams["sayu_pv"];
		visitNo = queryParams["sayu_vn"];
		setSayuCookie("sessionVisit" + clientId, visitId, 0);
		setSayuCookie("cookieVisit" + clientId, parentId + "|" + visitNo, 3600 * 24 * 366);
		// count clicks
		clickNumber = parseInt(queryParams["sayu_cn"]);
		clickNumber = clickNumber + 1;
		setSayuCookie("sessionClick" + clientId, clickNumber, 0);
		// save ad clicks info
		if (queryParams["sayu_ac"]) {
			setSayuCookie("cookieAdClick" + clientId, queryParams["sayu_ac"], 3600 * 24 * 366);
		}
		// save fast link info in cookies and session to prevent new visit record
		if (queryParams["sayu_fl"]) {
			setSayuCookie("cookieFl" + clientId, queryParams["sayu_fl"], 3600 * 24 * 366);
			setSayuCookie("sessionFl" + clientId, queryParams["sayu_fl"], 0);
		}
		if (queryParams["sayu_kw"]) {
			setSayuCookie("cookieKw" + clientId, queryParams["sayu_kw"], 3600 * 24 * 366);
			setSayuCookie("sessionKw" + clientId, queryParams["sayu_kw"], 0);
		}
		if (queryParams["sayu_ci"]) {
			setSayuCookie("cookieCi" + clientId, queryParams["sayu_ci"], 3600 * 24 * 366);
			setSayuCookie("sessionCi" + clientId, queryParams["sayu_ci"], 0);
		}
		if (queryParams["sayu_network"]) {
			setSayuCookie("cookieNetwork" + clientId, queryParams["sayu_network"], 3600 * 24 * 366);
			setSayuCookie("sessionNetwork" + clientId, queryParams["sayu_network"], 0);
		}
		if (queryParams["sayu_kwid"]) {
			setSayuCookie("cookieKwId" + clientId, queryParams["sayu_kwid"], 3600 * 24 * 366);
			setSayuCookie("sessionKwId" + clientId, queryParams["sayu_kwid"], 0);
		}
		if (queryParams["sayu_pm"]) {
			setSayuCookie("cookiePm" + clientId, queryParams["sayu_pm"], 3600 * 24 * 366);
			setSayuCookie("sessionPm" + clientId, queryParams["sayu_pm"], 0);
		}
	}

	if (flParam == "" && tfParam == "") { 
		// get for new visit old fast link data if its available
		flParam = getSayuCookie("cookieFl" + clientId); 
		kwParam = getSayuCookie("cookieKw" + clientId);
		ciParam = getSayuCookie("cookieCi" + clientId);
		networkParam = getSayuCookie("cookieNetwork" + clientId);
		kwIdParam = getSayuCookie("cookieKwId" + clientId);
		pmParam = getSayuCookie("cookiePm" + clientId);
	}

	var jsSrc = "landing.js?client_id=" + clientId;
	jsSrc += "&vid=" + visitId;
	jsSrc += "&cn=" + clickNumber;
	if (flParam != "") {
		setSayuCookie("cookieKw" + clientId, kwParam, 3600 * 24 * 366);
		setSayuCookie("cookieFl" + clientId, flParam, 3600 * 24 * 366);
		setSayuCookie("cookieCi" + clientId, ciParam, 3600 * 24 * 366);
		setSayuCookie("cookieNetwork" + clientId, networkParam, 3600 * 24 * 366);
		setSayuCookie("cookieKwId" + clientId, kwIdParam, 3600 * 24 * 366);
		setSayuCookie("cookiePm" + clientId, pmParam, 3600 * 24 * 366);
		var sessFl = getSayuCookie("sessionFl" + clientId); 
		var sessKw = getSayuCookie("sessionKw" + clientId); 
		var sessCi = getSayuCookie("sessionCi" + clientId); 
		var sessNetwork = getSayuCookie("sessionNetwork" + clientId);
		var sessKwId = getSayuCookie("sessionKwId" + clientId); 
		var sessPm = getSayuCookie("sessionPm" + clientId); 
		// pass fast link data only for new visit and new clicks
		var sameDR = false;
		var dr = /^http[s]?\:\/\/(?:www\.|ssl\.|secure\.|)([^\/]+)(?:\/|$)/;
		var r = referrerURL.match(dr);
		if (r && r[1] == dn) {
			sameDR = true;
		}
		if (!sameDR && (sessFl != flParam || sessKw != kwParam || sessCi != ciParam || sessNetwork != networkParam || sessPm != pmParam)) {
			adClick = parseInt(getSayuCookie("cookieAdClick" + clientId));
			if (isNaN(adClick) || adClick == "" || adClick == 0) { 
				adClick = 1; 
			} else {
				adClick = adClick + 1;
			}
			setSayuCookie("cookieAdClick" + clientId, adClick, 3600 * 24 * 366);
			jsSrc += "&fl=" + flParam + "&kw=" + escape(kwParam).replace(/\+/g,"%2B") + "&ci=" + ciParam + "&network=" + networkParam;			
			jsSrc += "&kwid=" + kwIdParam + "&pm=" + pmParam + "&ac=" + adClick;
		}
	}
	if ((flParam != "" && clickFD != 0 && adClick > clickAdMax) || tfParam == "css" || tfParam == "redir" || tfParam == "popup") {
		if (tfParam == "css" || tfParam == "redir" || tfParam == "popup") {
			clickDisplay = tfParam;
		}
		if (clickDisplay == "redir") {
			fraudParam = 1;
			if (tfParam == "redir") {
				parent.location.href = scriptURL + "fraud_win.php?client_id=" + clientId+ "&u=" + escape(urlParam) + "&tf=redir";
			}
		} else if (clickDisplay == "popup") {
			var popupURL = scriptURL + "fraud_win.php?client_id=" + clientId+ "&u=" + escape(urlParam);
			if (tfParam == "popup") { popupURL += "&tf=popup"; }
			var popupWin = window.open(popupURL, "fraudWin", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=350,height=250");
			popupWin.focus();
		} else { // css
			var topPos = 200; var leftPos = 300;
			var availWidth = window.screen.availWidth;
			if (availWidth && availWidth > 0) {
				leftPos = availWidth / 2 - 150;
			}
			sayuHideObjects();
        	if (document.body.insertAdjacentHTML) {
          		document.body.insertAdjacentHTML("afterBegin", fraudCSS);
			} else {
				document.write(fraudCSS);
			}
		}
	}
	if (parentId != "") {
		jsSrc += "&pv=" + parentId + "&vn=" + visitNo;
	}
	if (urlParam != "") {
		jsSrc += "&u=" + escape(urlParam);
		if (pageURL != "" && urlParam != pageURL) {
			jsSrc += "&p=" + escape(pageURL);
		}
	}
	if (referrerURL != "") {
		jsSrc += "&ref=" + escape(referrerURL);
	}
	if (fraudParam == 1) {
		jsSrc += "&fraud=1";
	}
	if (referrerURL != "") {
		jsSrc += "&tf=" + escape(tfParam);
	}
		document.write ("<script language=\"JavaScript\" src=\"http://www.sayutracking.co.uk/" + jsSrc + "\"></script>");
	function getSayuDomain()
	{
		var dn = document.domain;
		if (dn.substring(0,4)=="www." || dn.substring(0,4)=="ssl.") {
		 dn=dn.substring(4,dn.length);
		} else if (dn.substring(0,7)=="secure.") {
		 dn=dn.substring(7,dn.length);
		}
		return dn;
	}

	function sayuShowObjects(){
		if (sayuHiddenObjects && sayuHiddenObjects.length > 0) {
			for (var i = 0; i < sayuHiddenObjects.length; i++) {
				sayuHiddenObjects[i].style.visibility = "visible";
			}
		}
	}

	function sayuHideObjects(){
		if (isIE) {
			var objectsNames = new Array("select", "object", "iframe");
		} else {
			var objectsNames = new Array("object", "iframe");
		}
		for (n = 0; n < objectsNames.length; n++) {
			var objectName = objectsNames[n];
			var objects = document.getElementsByTagName(objectName);
			for (i = 0; i < objects.length; i++) {
				var objectControl = objects[i];
	  
				if (objectControl.style.visibility != "hidden") {
					sayuHiddenObjects[sayuHiddenObjects.length] = objectControl;
					objectControl.style.visibility = "hidden";
				}
			}
		}
	}


	function hideSayuWin()	{
		var winObj = document.getElementById("fraud_win");
		var shadowObj = document.getElementById("fraud_win_shadow");
		if (shadowObj) {
			shadowObj.style.display = "none"; 
		}
		if (winObj) {
			winObj.style.display = "none"; 
		}
		sayuShowObjects();
	}

	function setSayuCookie(name, value, seconds, path, domain, secure) 
	{
		var _ad = true; // auto set domain name
		var cookie = name + "=" + escape(value);
		if (seconds > 0) {
			var today = new Date();
			var expire = new Date();
			expire.setTime(today.getTime() + 1000 * seconds);
			cookie += "; expires=" + expire.toGMTString();
		}
		//if (path)   { cookie += "; path=" + path; }
		cookie += "; path=/";
		if (domain) { 
			cookie += "; domain=" + domain;
		} else if (typeof(__sayuCookieBaseDomain) != "undefined") {
			if (__sayuCookieBaseDomain != "") {
				cookie += "; domain=" +  __sayuCookieBaseDomain;
			}
		} else if (_ad) { 
		  var dn = getSayuDomain();
			if (dn != "localhost") {
				cookie += "; domain=" + dn; 
			}
		}
		if (secure) { cookie += "; secure"; }
		document.cookie = cookie;
	}


	function getSayuCookie(name) 
	{
		var dc = document.cookie;
		var prefix = name + "=";
		var begin = dc.indexOf("; " + prefix);
		if (begin == -1) {
			begin = dc.indexOf(prefix);
			if (begin != 0) return "";
		} else {
			begin += 2;
		}
		var end = document.cookie.indexOf(";", begin);
		if (end == -1) {
			end = dc.length;
		}
		return unescape(dc.substring(begin + prefix.length, end));
	}

	function transferSayuData(source, type) 
	{
		var url = "";
		if (type == "form") {
			url = source.action;
		} else if (type == "link") {
			url = source.href;
		} else {
			// string type processing
			url = source;
		}

		var parentId = ""; var visitNo  = "";
		var cookieVisit = getSayuCookie("cookieVisit" + clientId);
		if (cookieVisit != "") {
			var visitInfo = cookieVisit.split("|");
			parentId = visitInfo[0];
			visitNo = parseInt(visitInfo[1]);
		}

		url = addSayuParam(url, "sayu_transfer", "1");
		url = addSayuParam(url, "sayu_vid", getSayuCookie("sessionVisit" + clientId));
		url = addSayuParam(url, "sayu_pv", parentId); // parent visit
		url = addSayuParam(url, "sayu_vn", visitNo); // visit number
		url = addSayuParam(url, "sayu_fl", getSayuCookie("sessionFl" + clientId)); // fast link
		url = addSayuParam(url, "sayu_kw", getSayuCookie("sessionKw" + clientId)); // keyword
		url = addSayuParam(url, "sayu_ci", getSayuCookie("sessionCi" + clientId)); // creative id
		url = addSayuParam(url, "sayu_network", getSayuCookie("sessionNetwork" + clientId)); // network
		url = addSayuParam(url, "sayu_kwid", getSayuCookie("sessionKwId" + clientId)); // keyword id
		url = addSayuParam(url, "sayu_ac", getSayuCookie("cookieAdClick" + clientId)); // ad clicks
		url = addSayuParam(url, "sayu_cn", getSayuCookie("sessionClick" + clientId)); // session click number
		url = addSayuParam(url, "sayu_pm", getSayuCookie("sessionPm" + clientId)); // placement

		if (type == "form") {
			source.action = url;
		} else if (type == "link") {
			// string type processing
			source.href = url;
		} else {
			return url;
		}
	}

	function addSayuParam(url, newParamName, newParamValue)
	{
		var grateMark  = url.indexOf("#");
		var questionMark  = url.indexOf("?");
		var grateUrl = ""; var queryString = "";
		if (grateMark != -1) {
			grateUrl = url.substring(grateMark + 1, url.length);
			url = url.substring(0, grateMark);
		}
		if (questionMark != -1) {
			queryString = url.substring(questionMark + 1, url.length);
			url = url.substring(0, questionMark);
		}

		var i = 0; var newQueryString = ""; var newParamFound = false; 
		if (queryString.length > 0) {
			var queryParts = queryString.split("&");
			for (i = 0; i < queryParts.length; i++) {
				var paramName  = ""; var paramValue = "";
				var queryPart = queryParts[i];
				var equalSign = queryPart.indexOf("=");
				if (equalSign == -1) {
					paramName = queryPart;
				} else {
					paramName  = queryPart.substring(0, equalSign);
					paramValue = unescape(queryPart.substring(equalSign + 1, queryPart.length));
				}
				newQueryString += (i == 0) ? "?" : "&";
				newQueryString += paramName + "=";
				if (paramName == newParamName) {
					newQueryString += escape(newParamValue);
					newParamFound = true;
				} else {
					newQueryString += escape(paramValue);
				}
			}
		} 
		if (!newParamFound) {
			newQueryString += (i == 0) ? "?" : "&";
			newQueryString += newParamName + "=" + escape(newParamValue);
		}

		url += newQueryString;
		if (grateMark != -1) {
			url += "#" + grateUrl;
		}
		return url;
	}

	function sayuClearConvValue(value) {
		var _cv = "";
		var decimals = Array("0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ".", "-");
		var _cvLen = value.length;
		if (_cvLen > 0) {
			for(var i = 0; i < _cvLen; i++) {
				if (sayuLookUpElement(decimals, value.charAt(i)) >= 0) {
					_cv += value.charAt(i);
				}
			}
		}
		return _cv;
	}

	function sayuLookUpElement(arr, element) {
		if (arr != null) {
			for(i = 0; i < arr.length; i++) {
				if (arr[i] == element) {
					return i;
				}
			}
		}
		return -1;
	}

function sayuSaveConversion(_cvParam) {	
	var cvParam = parseFloat(sayuClearConvValue(_cvParam));
	var currDate = new Date();
	var cvT = parseInt(currDate.getTime()/1000);
	var sameCvValueDelay = 300;
	var zeroCvValueDelay = 120;
	var cookieConversion = getSayuCookie("cookieConversion" + clientId);

	var prevCv = 0;
	var prevT = 0;
	var cvInfo = cookieConversion.split("|");
	if (cvInfo.length == 2) {
		prevCv = parseFloat(cvInfo[1]);
		prevT = parseInt(cvInfo[0]);
	}
	var isConversion = true;
	if (cvParam == 0) {
		if (cvT - prevT < zeroCvValueDelay) {
			isConversion = false;
		}
	} else {
		if (cvParam == prevCv && cvT - prevT < sameCvValueDelay) {
			isConversion = false;
		}
	}

	if (isConversion) {
		var visitId = ""; var parentId = 0; var visitNo = 1;
		visitId = getSayuCookie("sessionVisit" + clientId);
		if (visitId == "") { visitId = 0; }
		var cookieVisit = getSayuCookie("cookieVisit" + clientId);
		if (cookieVisit != "") {
			var visitInfo = cookieVisit.split("|");
			parentId = visitInfo[0];
			visitNo = visitInfo[1];
		}
	
		var queryParams = new Array();
		var currentURL = parent.location.href;
		if (currentURL == "") {
			currentURL = window.location.href;
		}
		var questionMark = currentURL.indexOf("?");
		if (questionMark != -1) {
			var queryString = currentURL.substring(questionMark + 1, currentURL.length);
			var queryParts = queryString.split("&");
			for (var i = 0; i < queryParts.length; i++) {
				var paramName  = ""; var paramValue = "";
				var queryPart = queryParts[i];
				var equalSign = queryPart.indexOf("=");
				if (equalSign == -1) {
					paramName = queryPart;
				} else {
					paramName  = queryPart.substring(0, equalSign);
					paramValue = unescape(queryPart.substring(equalSign + 1, queryPart.length));
					queryParams[paramName] = paramValue;
					if (paramName == "cv") {
						cvParam = paramValue;
					} 
				}
			}
		}

		setSayuCookie("cookieConversion" + clientId, cvT + "|" + cvParam, 3600 * 24 * 366);	

		var jsSrc = "conversion.js?client_id=" + clientId;
		jsSrc += "&vid=" + visitId;
		jsSrc += "&pv=" + parentId + "&vn=" + visitNo;
		if (cvParam != "") {
			jsSrc += "&cv=" + cvParam;
		}
		if (currentURL != "") {
			jsSrc += "&u=" + escape(currentURL);
		}
		//document.write ("<script language=\"JavaScript\" src=\"http://www.sayutracking.co.uk/" + jsSrc + "\"></script>");
		var e = document.createElement("script");
	   	e.src = "http://www.sayutracking.co.uk/" + jsSrc;
   		e.type="text/javascript";
		var elements = document.getElementsByTagName("body");
		if (elements.length > 0) {
			var element = elements[0];
			if (element != null) {
   				element.appendChild(e); 
			}
		}
		
	}
}