var cnnad_tileID = cnnad_getID();
var cnnad_enabled = true;
var cnnad_adIframes = new Array();
var cnnad_adVault = new Array();
var cnnad_adCache = new Array();

// flag for geo targetting image
var alreadySwappedDETargetImage = false;
var cnnDEadDEonCookie = false;

// document domain security issues
var cnnDocDomain = cnnad_getTld(location.hostname);
if(cnnDocDomain) {document.domain = cnnDocDomain;}


//ADM send functionality
//pagemodes - 1(all tags) - DM_cat(), DM_addToLoc(), DM_tag();
//pagemodes - 2(health) -  DM_tag();
//pagemodes - 3(none);
var cnnad_pageMode = 1;
var cnnad_calledURLs = new Array(); //associative array
var cnnad_successfulSend = 0;
var cnnad_resultArray = new Array();

function cnnad_sendADMData() {
	var cnnad_ADMSizes = new Array();
	var finalExpression = "";
	cnnad_ADMSizes = ["728x90","300x250","336x280","160x600"];

	for(as=0;as<cnnad_ADMSizes.length;as++){
		var calledURL = cnnad_calledURLs[cnnad_ADMSizes[as]];

		if(calledURL && cnnad_successfulSend == 0){

			if(cnnad_pageMode != 3){
				finalExpression += '<scr' + 'ipt> \n ';
				if(cnnad_pageMode == 1){
					finalExpression += '	A09801.DM_cat("';
					var site = cnnad_getParamValue(calledURL, "site=","&");
					var rollup = cnnad_getParamValue(calledURL, "_rollup=","&");
					var section = cnnad_getParamValue(calledURL, "_section=","&");
					var subsection = cnnad_getParamValue(calledURL, "_subsection=","&");

					finalExpression += site;
					if((site!="") && ((rollup!="") || (section!="") || (subsection!=""))){
						finalExpression += " > ";
					}
					finalExpression += rollup;
					if((rollup!="") && ((section!="") || (subsection!=""))){
						finalExpression += " > ";
					}
					finalExpression += section;
					if((section!="") && (subsection!="")){
						finalExpression += " > ";
					}
					finalExpression += subsection;
					finalExpression += '"); \n ';
					finalExpression += '	A09801.DM_addEncToLoc(); \n ';
				}
				finalExpression += '	A09801.DM_tag(); \n ';
				finalExpression += '</scr' + 'ipt> \n ';

				//alert(finalExpression);

				document.write(finalExpression);

			}

			cnnad_successfulSend = 1;
			break;
		}
	}
}


function cnnad_getParamValue(paramString, parameter, endCharacter){
	if(paramString.match(parameter)){
		var startOfString = paramString.indexOf(parameter)+parameter.length;
		var endOfString = paramString.indexOf(endCharacter,startOfString);
	 	var parameterValue = paramString.substring(startOfString,endOfString);
	 	return parameterValue;
	 }
	 else{
	 	return "";
	 }
}
// end ADM send functionality

//DYNAMIC TYLEID
var cnnad_adTileIDGroup = new Array();
var cnnad_newTileIDIteration = 0;

function cnnad_newTileIDGroup(newGroupArray) {
	var newTileID = (cnnad_tileID * 1 + (++cnnad_newTileIDIteration));
	for (var i = 0; i < newGroupArray.length; i++) {
		cnnad_adTileIDGroup[cnnad_adTileIDGroup.length] = {tileID:newTileID, adName:newGroupArray[i]}; 
	}
}

function cnnad_getDynamicTileID(adURL) {
	var returnId = cnnad_tileID;
	if(cnnad_adTileIDGroup.length > 0){
		var ad_position;
		if(adURL.match("_position=") ){
			ad_position = cnnad_getParamValue(adURL, "_position=", "&");
		}
		else if(adURL.match("_pos=")){
			ad_position = cnnad_getParamValue(adURL, "_pos=", "&");
		}
		else {
			ad_position = "";
		}
		for (var i = 0; i < cnnad_adTileIDGroup.length; i++) {
			var adName = cnnad_adTileIDGroup[i].adName;
			if(ad_position == adName){
				returnId = cnnad_adTileIDGroup[i].tileID;
				break;
			}			
		}
	}
	return returnId;
}
//END DYNAMIC TYLEID

function cnnad_reverseString (input)
{
	// convert everything to a string
	input = "" + input;
	var output = '';

	if (input.length)
	{
		var i;
		for (i = input.length; i > 0; i--)
		{
			output += input.charAt(i-1);
		}
	}
	return(output);
}

function cnnad_getID() {
	return (cnnad_reverseString(new Date().getTime()));
}

function cnnad_renderAd(cnnad_url) {
	if(cnnad_enabled == true) {
		document.write("<script type=\"text/javascript\"");
		document.write(" src=\""+cnnad_url+"&tile="+cnnad_getDynamicTileID(cnnad_url)+"\"></scr");
		document.write("ipt>");
	}
}

function cnnad_preview(cnnad_adstring) {
	if ( location.host.indexOf("turner.com") > -1) {
		// we are on preview (or on local subnet, so we have to use internal names)
		cnnad_adstring = cnnad_adstring.replace(new RegExp("ads\..*?\.com","gi"),"ads.turner.com");
	}
	return cnnad_adstring;
}

function cnnad_createIframe (id, url)
{
	var iframe = document.createElement('iframe');
	iframe.id = id;
	iframe.name = id;
	iframe.width = 0;
	iframe.height = 0;
	iframe.style.visibility = 'hidden';
	iframe.style.position = 'absolute';
	iframe.marginWidth = 0;
	iframe.marginHeight = 0;
	iframe.frameBorder = 0;
	iframe.scrolling = "no";
	iframe.allowTransparency = 'true';
	iframe.src = url;

	return iframe;
}

function cnnad_createAdNoTileId(adId,cnnad_url,cnnad_height,cnnad_width,target) {
	var d = document.getElementById('ad-' + adId);
	cnnad_url = cnnad_preview(cnnad_url);

	if (d)
	{
		cnnad_url += '&domId=' + adId;
		if (! document.getElementById(adId))
		{
			d.appendChild(cnnad_createIframe(adId, cnnad_url));
		}
	}
	else
	{
		if (!target) {
			document.write('<iframe ALLOWTRANSPARENCY="true" hspace="0" vspace="0" marginHeight="0" marginWidth="0" src="' + cnnad_url + '&page.allowcompete=yes&domId=' + adId + '" border="0" frameBorder="0" height="0" width="0" scrolling="no"  id="'+adId+'" style="position: absolute; visibility: hidden;" ></iframe>');
		} else {
			document.getElementById(target).innerHTML = '<iframe ALLOWTRANSPARENCY="true" hspace="0" vspace="0" marginHeight="0" marginWidth="0" src="' + cnnad_url + '&page.allowcompete=yes&domId=' + adId + '" border="0" frameBorder="0" height="0" width="0" scrolling="no"  id="'+adId+'" style="position: absolute; visibility: hidden;" ></iframe>';
		}
	}
}

function cnnad_createAd(adId,cnnad_url,cnnad_height,cnnad_width,target) {
	var d = document.getElementById('ad-' + adId);
	cnnad_url = cnnad_preview(cnnad_url);

	if (d)
	{
		cnnad_url += '&tile=' + cnnad_getDynamicTileID(cnnad_url) + '&domId=' + adId;
		if (! document.getElementById(adId))
		{
			d.appendChild(cnnad_createIframe(adId, cnnad_url));
		}
	}
	else
	{
		if (!target) {
			document.write('<iframe ALLOWTRANSPARENCY="true" hspace="0" vspace="0" marginHeight="0" marginWidth="0" src="' + cnnad_url + '&tile=' + cnnad_getDynamicTileID(cnnad_url) + '&page.allowcompete=yes&domId=' + adId + '" border="0" frameBorder="0" height="0" width="0" scrolling="no"  id="'+adId+'" style="position: absolute; visibility: hidden;" ></iframe>');
		} else {
			document.getElementById(target).innerHTML = '<iframe ALLOWTRANSPARENCY="true" hspace="0" vspace="0" marginHeight="0" marginWidth="0" src="' + cnnad_url + '&tile=' + cnnad_getDynamicTileID(cnnad_url) + '&page.allowcompete=yes&domId=' + adId + '" border="0" frameBorder="0" height="0" width="0" scrolling="no"  id="'+adId+'" style="position: absolute; visibility: hidden;" ></iframe>';
		}
	}
	
	// ADM functionality
		var adSize = new String();

		if(cnnad_url.match("_position=") ){
			adSize = cnnad_getParamValue(cnnad_url, "_position=", "_");
		}
		else if(cnnad_url.match("_pos=")){
			adSize = cnnad_getParamValue(cnnad_url, "_pos=", "_");
		}
		else {
			adSize = "";
		}

		cnnad_calledURLs[adSize] = cnnad_url;
	// END ADM functionality


	
	
}

function cnnad_writeAd(cnnad_callid,cnnad_url) {
        if(cnnad_enabled == true) {
                document.write("<script id=\"" + cnnad_callid + "\" type=\"text/javascript\" onload=\"cnnSendData();\"");
                document.write(" src=\""+cnnad_url+"&tile="+cnnad_getDynamicTileID(cnnad_url)+"\"></scr");
                document.write("ipt>");
        }
}

function cnnad_showAd(cnnad_id) {
	if (document.getElementById(cnnad_id))
	{
		document.getElementById(cnnad_id).style.position = 'relative';
		document.getElementById(cnnad_id).style.visibility = 'visible';
	}
	else 
	{
		// alert("Error displaying ad component: " + cnnad_id);	
		// just do not display the ad. -sg
	}
}

function cnnad_setAdSize(docId,height,width) {
	var i = document.getElementById(docId);

        if (i)
	{
                i.height = height;
                i.width = width;
        }
	else 
	{
		// alert("Error displaying ad component: " + cnnad_id);	
		// just do not display the ad. -sg
	}
}

function cnnad_readCookie( name ) {
        if ( document.cookie == '' ) { // there is no cookie, so go no further
            return false;
        } else { // there is a cookie
            var firstChar, lastChar;
                var theBigCookie = document.cookie;
                firstChar = theBigCookie.indexOf(name); // find the start of 'name'
                var NN2Hack = firstChar + name.length;
                if ( (firstChar != -1) && (theBigCookie.charAt(NN2Hack) == '=') ) { // if you found the cookie
                        firstChar += name.length + 1; // skip 'name' and '='
                        lastChar = theBigCookie.indexOf(';', firstChar); // Find the end of the value string (i.e. the next ';').
                        if (lastChar == -1) lastChar = theBigCookie.length;
                        return unescape( theBigCookie.substring(firstChar, lastChar) );
                } else { // If there was no cookie of that name, return false.
                        return false;
                }
        }
}

function cnnad_getTld (hostname)
{
	var data = hostname.split(".");
	if (data.length >= 2)
	{
		return (data[data.length-2] + "." + data[data.length-1]);
	}
	return(null);
}

function cnnad_refreshAds (type)
{
    if (! cnnad_adIframes)
    {
        return;
    }

	var debug = document.getElementById("debugUrl");

	if (debug)
	{
		debug.innerHTML = "";
	}

    for (var i = 0; i < cnnad_adIframes.length; i++)
    {
		var targetAd = cnnad_adIframes[i];
		var newAdLoc = cnnad_findAd(type,targetAd.getWidth(),targetAd.getHeight());
		cnnad_swapAd(targetAd.getId(), newAdLoc, debug);
    }
}

function cnnad_swapAd (id, newAdLoc, debug)
{

	var elem = document.getElementById(id);
	if (elem)
	{
		elem.width = 0;
		elem.height = 0;
		elem.style.position = 'absolute';
		elem.style.visibility = 'hidden';

		// if we find our ad in the cache, then use it
		if (cnnad_adCache[newAdLoc])
		{
			//alert("found ad via cache: " + cnnad_adCache[newAdLoc]);
			//elem.src = cnnad_adCache[newAdLoc];

		for (var j = 0; j < window.frames.length; j++) {
			try {
					if (window.frames[j].location.href.indexOf('domId='+id) > -1) {
						window.frames[j].location.replace(cnnad_adCache[newAdLoc]);
					}
 		} catch(e) {}
		}		

			return;
		}

		// if not in cache, we fetch it using an Ajax call
		// first we try Prototype
		if ((typeof Ajax != 'undefined') && (typeof Ajax.Request != 'undefined'))
		{
			var temp = new Ajax.Request(
								newAdLoc,
								{
									method:'get',
									onSuccess: function (req) {
										var newLoc = cnnad_parseResponse(req.responseText,id);
										newLoc = cnnad_preview(newLoc);
										if (newLoc)
										{
											if (debug) { debug.innerHTML += "<br>Updated " + elem.id + " with " + newLoc; }
											cnnad_adCache[newAdLoc] = newLoc;
											//elem.src = newLoc;
		for (var j = 0; j < window.frames.length; j++) {
			try {
					if (window.frames[j].location.href.indexOf('domId='+id) > -1) {
						window.frames[j].location.replace(newLoc);
					}
 		} catch(e) {}
		}		

			return;
										}
									}
								});
		}
		// next try Dojo
		else if (typeof dojo != 'undefined')
		{
			if (typeof dojo.io == 'undefined')
			{
				dojo.require("dojo.io.*");
			}

			dojo.io.bind({
				url: newAdLoc,
				load: function (type, data, evt) {
							var newLoc = cnnad_parseResponse(data,id);
							newLoc = cnnad_preview(newLoc);
							if (newLoc)
							{
								if (debug) { debug.innerHTML += "<br>Updated " + elem.id + " with " + newLoc; }
								cnnad_adCache[newAdLoc] = newLoc;
								elem.src = newLoc;
							}
					}
			});

		}
		// neither worked, we just give up and not do anything
		else
		{
			// do nothing 
			// alert("No way to fetch " + newAdLoc);
		}
	}
}

function cnnad_parseResponse (resp, id)
{
	// chop off everything before callout marker
	var startMarker = "<!-- CALLOUT|";
	var endMarker = "|CALLOUT -->";
	var start = resp.indexOf(startMarker);
	var end = resp.indexOf(endMarker);
	var loc = null;
	
	if (start >= 0 && end > start)
	{
		loc = resp.substring(start + startMarker.length ,end);
	}

	if (loc)
	{
		return(loc + "&domId=" + id + "&page.allowcompete=yes");
	}
	else
	{
		//alert("Parsing failed!");
		return null;
	}
}

function cnnad_findAd (type, width, height)
{
	var ret = null;
	for (var i = 0; i < cnnad_adVault.length; i++)
	{
		var ad = cnnad_adVault[i];
		if (ad.getType() == type && ad.getHeight() == height && ad.getWidth() == width)
		{
			ret = ad.getUrl();
			break;
		}
	}
	return ret;
}

function cnnad_getDEAdHeadCookie( imageRef ) {
	if (typeof(cnnad_readCookie) != "undefined") {
		cnnDEadDEonCookie = cnnad_readCookie( 'adDEon' );
	}
	var newSrc = "http://gdyn." + cnnad_getTld(location.hostname) + "/1.1/1.gif?" + new Date().getTime();
	if ( !alreadySwappedDETargetImage && !cnnDEadDEonCookie) {
		imageRef.src = newSrc;
		alreadySwappedDETargetImage = true;
	}
}

function cnnad_registerAd (type, width, height, url)
{
	var ad = new cnnad_AdObject (null, width, height, type, url);
	cnnad_adVault[cnnad_adVault.length] = ad;
}

function cnnad_registerSpace (id, width, height)
{
	var ad = new cnnad_AdObject(id, width, height, null, null);
	cnnad_adIframes[cnnad_adIframes.length] = ad;
}



/******
 ******  START interstitial code; NSCR-7390
 ******
*/
var cnnad_interstitPID = null;
var cnnad_playingInterstitial = 0;
function cnnad_endInterstitial(adId)
{
	// do the work to put things back
	var styleNode = document.getElementById('interstitialcss'+adId);
	var adNode = document.getElementById('interstitial'+adId);

	if(adNode && adNode.parentNode)
	{
		adNode.parentNode.removeChild(adNode);
	}
	if(styleNode && styleNode.parentNode)
	{
		styleNode.parentNode.removeChild(styleNode);
	}
	
	// for IE, we need to add another style to make sure tables show up
	if (typeof(document.createStyleSheet) != 'undefined')
	{
		var cssNode = document.createStyleSheet();
		cssNode.addRule('table','{display:block}');
	}

	cnnad_interstitPID = null;
	cnnad_playingInterstitial = 0;
}

function cnnad_startInterstitial(adId,cnnad_url,timeout) 
{
	cnnad_playingInterstitial = 1;
	var adUrl =  cnnad_url + '&tile=' + cnnad_getDynamicTileID(cnnad_url) + '&page.allowcompete=yes&domId=' + adId;
	// do the work to hide the contents here -- we hide by moving to to the left
	document.write('<div id="interstitial'+adId+'" class="interstitial" align="center"><iframe ALLOWTRANSPARENCY="true" hspace="0" vspace="0" marginHeight="0" marginWidth="0" src="'+adUrl+'" border="0" frameBorder="0" height="0" width="0" scrolling="no" id="'+adId+'"></iframe></div>');
	if(!timeout) { timeout = 1500;}
	cnnad_interstitPID = window.setTimeout('cnnad_endInterstitial("'+adId+'");',timeout);
}

function cnnad_resetInterstitial(adId,timeout)
{
	cnnad_playingInterstitial = 1;
	var elem = document.getElementById(adId)
	if (null != elem && elem.height > 20 && elem.width > 20)
	{
		if(cnnad_interstitPID)
		{
			window.clearTimeout(cnnad_interstitPID);
		}
		if(!timeout) { timeout = 15000;}
		cnnad_interstitPID = window.setTimeout('cnnad_endInterstitial("'+adId+'");',timeout);
	}
}

function interstitialCSS(adId)
{
	var cssString = '<style type="text/css" id="interstitialcss'+adId+'">';
	cssString += 'body div.interstitial, body div.interstitial iframe';
	cssString += '{display:block !important\;}';
	cssString += 'body *';
	cssString += '{display:none\;}';
	cssString += 'body div.interstitial, body div.interstitial iframe';
	cssString += '{display:block !important\;}';
	cssString += '</style>';
	document.write(cssString);
} 
/******
 ******  END interstitial code; NSCR-7390
 ******
*/



// ----- THE CNN ADS OBJECT ----- //
function cnnad_AdObject (id,width,height,type,url)
{
	this.id = id;
	this.width = width;
	this.height = height;
	this.type = type;
	this.url = url;

	this.getId = function () { return this.id; };
	this.setId = function (id) { this.id = id };

	this.getWidth = function () { return this.width; };
	this.setWidth = function (width) { this.width = width; };

	this.getHeight = function () { return this.height; };
	this.setHeight = function (height) { this.height = height; };

	this.getType = function () { return this.type; };
	this.setType = function (type) { this.type = type; };

	this.getUrl = function () { return this.url; };
	this.setUrl = function (url) { this.url = url; };

	this.toString = function () { return "[AD|ID=" + this.id + "|WIDTH=" + this.width + "|HEIGHT=" + this.height + "]"; };
}
// ------ /CNN ADS OBJECT ----- //


// ------ COOKIE.CRUMB Handler ----- //
var alreadySwappedCookieCrumb = false;

function getCookieCrumb( imageRef ) {
	var cnnCookie = WM_readCookie( "CNNid" );
	if ( cnnCookie && cnnCookie.charAt( 0 ) == 'G' ) {
		// it's all good, you already got a cookie
	} else if ( !alreadySwappedCookieCrumb ) {
		imageRef.src = "http://nscrdyn.nascar.com/cookie.crumb";
		alreadySwappedCookieCrumb = true;
	}
}
// ------ /COOKIE.CRUMB Handler ----- //