//defs safe = encodeURIComponent; //Factory class to get TREE Tracker™ var _pt = function(){ return { //returns a new tracker instance with user provided config merged in _getTracker : function(cfg){ var t = new _pageTaggingTracker(cfg); return t; } }; //"class" for pageTagging implementation of Tracker function _pageTaggingTracker(cfg){ var version = "0.3"; var internalConfig = { visitorNamespace : "tree", trackingServer : "tracking.tree.com", trackingServerSecure : "stracking.tree.com", locationTrackImage: "{0}.gif", serverName: "serverName" , pageName : "unset" }; //overrides default config with user provided mergeCfg(cfg); //constants for querystring field names var qsParamConsts = { FORCE_TRACK : "Log", NAMESPACE : "ns", PAGE_NAME : "pageName", REFERRER : "referrer", TYPE : "type", STATUS : "status", DNS : "dns", URI_STEM : "uristem", USER_SUPPLIED_PREFIX: "v_", PAGE_LOAD_TIME : "pageload", SCREEN : "screen", CONNECTION : "ct", LANGUAGE : "lng", TREE_PT_VERSION : "version", URL : "url", SERVER_NAME : "sn", DATE_TIME : "dt", EVENT_CATEGORY : "eventCat", EVENT_ACTION : "eventAction", EVENT_LABEL : "eventLabel", EVENT_VALUE : "eventValue" }; function validateType(type){ } //helper class for querystring param function qsParam(k,v){ this.key = k; this.value = v; this._toString = function(){ return k+"="+v; } } //returns WIDTH x HEIGHT - COLOR_DEPTH function getScreenSize(){ var screenW = 640, screenH = 480; if (parseInt(navigator.appVersion)>3) { screenW = screen.width; screenH = screen.height; } else if (navigator.appName == "Netscape" && parseInt(navigator.appVersion)==3 && navigator.javaEnabled() ) { var jToolkit = java.awt.Toolkit.getDefaultToolkit(); var jScreenSize = jToolkit.getScreenSize(); screenW = jScreenSize.width; screenH = jScreenSize.height; } return screenW + "x" + screenH + "-" + window.screen.colorDepth; } //Browser Language function getLanguage(){ return window.navigator.language; } //returns url for image that will track the event. //**Does not track event, simply returns url to call to track it. function getEventTrackImgSrc(eC,eA,eL,eV){ var i = internalConfig; var c = qsParamConsts; var prms = [ new qsParam(c.FORCE_TRACK, "1") , new qsParam(c.DATE_TIME,new Date().getTime()) , new qsParam(c.NAMESPACE , safe(i.visitorNamespace)) , //new qsParam(c.PAGE_NAME , safe(i.pageName) ), //new qsParam(c.REFERRER , safe(document.referrer) ), new qsParam(c.TYPE , "NPV" ), new qsParam(c.EVENT_CATEGORY , safe(eC)), new qsParam(c.EVENT_ACTION , safe(eA)), new qsParam(c.EVENT_LABEL , safe(eL)), new qsParam(c.EVENT_VALUE , safe(eV)), //new qsParam(c.STATUS, "200" ), //new qsParam(c.DNS, document.location.host ), //new qsParam(c.URI_STEM, safe(location.pathname) ), //new qsParam(c.SCREEN, getScreenSize() ), //new qsParam(c.CONNECTION, "200" ), //new qsParam(c.LANGUAGE, getLanguage() ), new qsParam(c.TREE_PT_VERSION, version ), new qsParam(c.URL, safe(document.URL)) , new qsParam(c.SERVER_NAME , safe(i.serverName)) ]; var s = "http://" + i.trackingServer + "/" + String.format(i.locationTrackImage,"npv-event") + "?" + joinParams(prms); return s; } //returns URL for tracking PageView //**Does not track pageView, simply returns url suitable for tracking function getPageViewTrackImgSrc(){ var i = internalConfig; var c = qsParamConsts; var prms = [ new qsParam(c.FORCE_TRACK, "1") , new qsParam(c.DATE_TIME,new Date().getTime()) , new qsParam(c.NAMESPACE , safe(i.visitorNamespace)) , new qsParam(c.PAGE_NAME , safe(i.pageName) ), new qsParam(c.REFERRER , safe(document.referrer) ), new qsParam(c.TYPE , "PV" ), new qsParam(c.STATUS, "200" ), new qsParam(c.DNS, document.location.host ), new qsParam(c.URI_STEM, safe(location.pathname) ), new qsParam(c.SCREEN, getScreenSize() ), //new qsParam(c.CONNECTION, "200" ), new qsParam(c.LANGUAGE, getLanguage() ), new qsParam(c.TREE_PT_VERSION, version ), new qsParam(c.URL, safe(document.URL)) , new qsParam(c.SERVER_NAME , safe(i.serverName)) ]; var s = "http://" + i.trackingServer + "/" + String.format(i.locationTrackImage, "pv") + "?" + joinParams(prms); return s; } //joins an array of qsParam objects to form a querystring fragment function joinParams(prms){ var a = []; for(var prm in prms){ //ensure _toString exists in case array prototype modified if(prms[prm]._toString != 'undefined' && typeof prms[prm]._toString == 'function') a.push(prms[prm]._toString()); } return a.join('&'); } //helper, img tag suitable for document.write. function getImgTag(src){ return ''; } //merges userCfg into internalConfig function mergeCfg (userCfg){ for( var entry in userCfg ){ internalConfig[entry]=userCfg[entry]; } } //deprecated :-) function init(d){ var t = this; //c = _gat, h = c.b, o = c.q, k = c.w, l = c.F, s = c.C, q = c.P, f = c.z, n = "location", w = c.c, x = h, g = new c.hc, z = false; t.document = document; t.window = window; t.cacheBuster = Math.round((new Date).getTime() / 1000); t.cfg = _pt.mergeCfg(d); t.referrer = t.document.referrer; } //trackPageView private function function tPV(){ //document.write(getImgTag(getPageViewTrackImgSrc())); var img = new Image(); img.src = getPageViewTrackImgSrc(); } //trackEvent private function function tEvent(category, action, optional_label, optional_value){ var img = new Image(); img.src = getEventTrackImgSrc(category, action, optional_label,optional_value); } //public interface return { _version : version, // _getDocWriteString : getDocWriteStr(), _trackPageView : tPV, _trackEvent : tEvent }; } }(); String.format = function( text ) { //check if there are two arguments in the arguments list if ( arguments.length <= 1 ) { //if there are not 2 or more arguments there’s nothing to replace //just return the original text return text; } //decrement to move to the second argument in the array var tokenCount = arguments.length - 2; for( var token = 0; token <= tokenCount; token++ ) { //iterate through the tokens and replace their placeholders from the original text in order text = text.replace( new RegExp( "\\{" + token + "\\}", "gi" ), arguments[ token + 1 ] ); } return text; };