var OFFER = {
   offerId: 66,
   testRun: false,
   sampType: 'UNIQUEUSERS',
   eventType: 'LAYER',
   cookieDur: 8,
   offerRate: 0.01,
   offerShown: 0,
   offerOk: 0,
   offerCookieExpTime: null,
   offerCookieDomain: null,
   offerUrl: 'http://offers-service.cbsinteractive.com/offers/message.sc' + '?',
   offerCookieVal: -1, // defaults to -1 "was sampled"
   offerCookieName: 'u_offer_66',
   anonymousCookieName: 'XCLGFbrowser',
   linkFilter: ''.split('***'),
   onloadHandler: null,

   

   
   // code for working with cookies
   getCookie: function(n) {
      var cn = n + '=';
      var dc = document.cookie;
      if (dc.length > 0) {
         var bg = dc.indexOf(cn);
         if (bg != -1) {
            bg += cn.length;
            var nd = dc.indexOf(';', bg);
            if (nd == -1) {
               nd = dc.length;
            }
            return unescape(dc.substring(bg, nd));
         }
      }
      return null;
   },

   // creates/updates a cookie on the client machine
   storeCookie: function(name, val, exp, path, domain, secure) {
      document.cookie = name + '=' + escape(val) +
            ((exp==null) ? '' : '; expires=' + exp.toGMTString()) +
            ((path==null) ? '' : '; path=' + path) +
            ((domain==null) ? '' : '; domain=' + domain) +
            ((secure==null) ? '' : '; secure');
   },

   // appends a value to the given cookie name
   appendToCookie: function(name, val, exp, path, domain, secure) {
      var curVal = OFFER.getCookie(name);
      if (curVal == null) {
         OFFER.storeCookie(name, val, exp, path, domain, secure);
      } else {
         OFFER.storeCookie(name, (curVal + val), exp, path, domain, secure);
      }
   },

   // checks the offer cookie to determine if the supplied id is in the cookie
   checkOfferCookie: function(offerId) {
      var cookieVal = OFFER.getCookie(OFFER.offerCookieName);
      var idxVal = cookieVal.indexOf('(' + offerId + ')', 0);
      return idxVal != -1;
   },

   // handles showing the offer in a popup window if all is ok with the offer and offer cookie
   showOfferPopup: function() {
      if (!OFFER.offerOk || OFFER.offerShown || (OFFER.getCookie(OFFER.offerCookieName) == OFFER.offerCookieVal)
            || (OFFER.getCookie(OFFER.offerCookieName) == '-2')) {
         return;
      }
      var acId = escape(OFFER.getCookie(OFFER.anonymousCookieName));
      OFFER.storeCookie(OFFER.offerCookieName, OFFER.offerCookieVal, OFFER.offerCookieExpTime, '/',
            OFFER.offerCookieDomain, null);
      if (OFFER.getCookie(OFFER.offerCookieName) == OFFER.offerCookieVal) {
         OFFER.offerShown = 1;
         var url = OFFER.offerUrl + 'accId=' + acId + '&offerId=' + OFFER.offerId +
                   '&loc=' + escape(document.location);
         OFFER.openWindow(url, acId);
      }
   },

   // opens a new pop-up window
   openWindow: function(url) {
      var type = typeof document.sDat;
      var newWindow = null;
      var windowProps = 'position=TOPLEFT,resizable=1,scrollbars=1,width=780,height=715';
      var popupPos = 'TOPLEFT';
      var popupWidth = '780';
      var popupHeight = '715';
      if (popupPos == 'DEFAULT') {
      } else if (popupPos == 'TOPLEFT') {
         windowProps += ',left=0,top=0,screenX=0,screenY=0';
      } else if (screen.availHeight != 'undefined' && screen.availWidth != 'undefined') {
         var ax, ay;
         if( popupPos == 'TOPRIGHT') {
            ax = screen.availWidth - popupWidth;
            ay = 0;
         } else if (popupPos == 'BOTTOMLEFT') {
            ax = 0;
            ay = screen.availHeight - popupHeight;
         } else if (popupPos == 'BOTTOMRIGHT') {
            ax = screen.availWidth - popupWidth;
            ay = screen.availHeight - popupHeight;
         } else {
            ax = (screen.availWidth - popupWidth) / 2;
            ay = (screen.availHeight - popupHeight) / 2;
         }
         windowProps += ',left=' + ax + ',top=' + ay + ',screenX=' + ax + ',screenY=' + ay;
      }
      if (type == 'undefined') {
         newWindow = window.open(url, 'SURVEY', windowProps);
      } else {
         newWindow = window.open(url + '&dat=' + escape(document.sDat), 'SURVEY', windowProps);
      }
      newWindow.focus();
   },

      fetchXML: function(url, handler) {
      var scriptTag = document.createElement('script');
      scriptTag.type = 'text/javascript';
      scriptTag.src = url;
      document.body.appendChild(scriptTag);
   },

   // This function checks for the All Access ad (which,
   // apparently, consistantly sets the "zflag_page_header"
   // variable"). If found, the function executes anything loaded
   // into the window.onload variable. Otherwise, it calls an
   // Ajax object and sets the survey in motion, then runs the
   // window.onload function.
   loadLayer: function() {
      var allAccess = false;
      try {
         if (zflag_page_header) {
            allAccess = true;
         }
      } catch(e) {}
      var acId = -1;
      if (!allAccess) {
         acId = escape(OFFER.getCookie(OFFER.anonymousCookieName));
      }
      var urlX = OFFER.offerUrl + 'accId=' + acId + '&offerId=' + OFFER.offerId + '&loc=' + escape(document.location);
      OFFER.fetchXML(urlX, OFFER.populateMessage);
      if (typeof(OFFER.onloadHandler) != 'undefined' && OFFER.onloadHandler != null) {
         OFFER.onloadHandler();
      }
   },

   // This function takes the survey XML and acts on it.
   populateMessage: function(roXML) {
      var offerMsgXml = roXML.responseXML;

      var msgDivStyle = document.createElement("style");
      msgDivStyle.setAttribute("type", "text/css");

      var divStyleProps = '#offerMsg_66 { ';
      var layerPos = 'TOPLEFT';
      if (layerPos == 'TOPLEFT') {
         divStyleProps = divStyleProps + 'top: 100px; left: 100px; ';
      } else if (layerPos == 'TOPRIGHT') {
         divStyleProps = divStyleProps + 'top: 100px; right: 100px; ';
      } else if (layerPos == 'BOTTOMRIGHT') {
         divStyleProps = divStyleProps + 'bottom: 100px; left: 100px; ';
      } else {
         divStyleProps = divStyleProps + 'bottom: 100px; left: 100px; ';
      }
      divStyleProps = divStyleProps + 'color: #000; ';
      divStyleProps = divStyleProps + 'background-color: #' + 'ffffff; ';
      divStyleProps = divStyleProps + 'border-width: 1' + 'px; ';
      divStyleProps = divStyleProps + 'border-color: #' + '000000; ';
      divStyleProps = divStyleProps + 'border-style: solid; ';
      divStyleProps = divStyleProps + 'position: absolute; ';
      divStyleProps = divStyleProps + 'width: 428' + 'px; ';
      divStyleProps = divStyleProps + 'height: 450' + 'px; ';
      divStyleProps = divStyleProps + 'padding: 20px; ';
      divStyleProps = divStyleProps + 'z-index: 10000; ';
      divStyleProps = divStyleProps + '}';

      if (msgDivStyle.styleSheet) {  // for IE
         msgDivStyle.styleSheet.cssText = divStyleProps;
      } else {  // for all others
         msgDivStyle.appendChild(document.createTextNode(divStyleProps));
      }

      document.body.appendChild(msgDivStyle);

      var msgDiv = document.createElement("div");
      msgDiv.id = "offerMsg_66";
      msgDiv.innerHTML = offerMsgXml.getElementsByTagName('offerMessage')[0].firstChild.data;
      document.body.appendChild(msgDiv);
   },

   acceptOffer: function(url, messageId) {
      if (!OFFER.testRun) {
         // create hidden iframe to track the acceptance of the offer
         var acceptFrame = document.createElement("iframe");
         acceptFrame.id = "offerAccept_66";
         acceptFrame.style.display = "none";
         acceptFrame.src = "http://offers-service.cbsinteractive.com/offers/acceptOffer.sc" + "?offerId=66" + "&messageId=" + messageId;
         document.body.appendChild(acceptFrame);
      }

      // Get the anonymous cookie id
      var acId = escape(OFFER.getCookie(OFFER.anonymousCookieName));
      // Formulate the offer page URL and go to it
      url = url + 'accId=' + acId + '&offerId=' + OFFER.offerId + '&loc=' + escape(document.location);

      OFFER.openWindow(url);
      OFFER.closeOffer();
   },

   closeOffer: function() {
      OFFER.storeCookie(OFFER.offerCookieName, OFFER.offerCookieVal, OFFER.offerCookieExpTime, '/', OFFER.offerCookieDomain, null);
      if (OFFER.eventType == 'LAYER') {
         try {
            document.body.removeChild(document.getElementById("offerMsg_66"));
         } catch (e) {}
      }
   },
   // END LAYER function
   
   // function to determine the domain for the offer cookie from the current hostname
   getDomain: function() {
      var host = window.location.host;
      var dotCnt = 0;
      var domainStartIdx = 0;
      var domainEndIdx = host.lastIndexOf(':');

      if (domainEndIdx == -1) {
         domainEndIdx = host.length;
      }

      for (var i = 0; i < host.length; i++) {
         if (host.charAt(i) == '.') {
            dotCnt++;
         }
      }

      if (dotCnt != 3) {
         domainStartIdx = host.lastIndexOf('.');
         if (domainStartIdx > 0) {
            domainStartIdx = host.lastIndexOf('.', (domainStartIdx - 1));
         }
         if (domainStartIdx == -1) {
            domainStartIdx = 0;
         }
      } else {
         domainStartIdx = host.indexOf('.', 0);
      }

      return host.substring(domainStartIdx, domainEndIdx);
   },

   // sampling script to determine if offer will be served
   sampleUser: function() {
      var expDate = new Date();
      var expTimeMs = OFFER.cookieDur * 24 * 60 * 60 * 1000;
      expDate.setTime(expDate.getTime() + expTimeMs);
      OFFER.offerCookieExpTime = expDate;
      OFFER.offerCookieDomain = OFFER.getDomain();

      if ((OFFER.getCookie(OFFER.offerCookieName) != OFFER.offerCookieVal) &&
          (OFFER.getCookie(OFFER.offerCookieName) != '-2')) {
         var randomNum = Math.random() * 100;
         if (OFFER.sampType == 'UNIQUEUSER' && OFFER.checkOfferCookie(OFFER.offerId)) {
            OFFER.offerOk = 0;
         } else if (randomNum < OFFER.offerRate) {
            OFFER.offerOk = 1;
         } else {
            if (OFFER.sampType == 'UNIQUEUSER') {
               OFFER.appendToCookie(OFFER.offerCookieName, '(' + OFFER.offerId + ')', OFFER.offerCookieExpTime,
                     '/', OFFER.offerCookieDomain, null);
            }
            OFFER.offerOk = 0;
         }
      } else {
         OFFER.offerOk = 0;
      }
      if (OFFER.offerOk == 1) {
         if (OFFER.eventType == 'PGLOAD') {
            OFFER.showOfferPopup();
         } else if (OFFER.eventType == 'LINKCLICK') {
            OFFER.onloadHandler = window.onload;
            window.onload = OFFER.processLinks;
         } else if (OFFER.eventType == 'LAYER') {
            OFFER.onloadHandler = window.onload;
            window.onload = OFFER.loadLayer;
         } else {
            OFFER.onloadHandler = window.onunload;
            window.onunload = OFFER.handlePageUnload;
         }
      }
   }

};  // End var OFFER =
OFFER.sampleUser();