/* IE doesn't support indexOf, so we must teach it.  Normally, we wouldn't muck with
 * Array.prototype on an unknown page; however, this is a standard JS function and the code is
 * taken right from the Mozilla project's implementation.  It should perfectly mimick
 * [].indexOf in standards-compliant browsers.
 */
if (!Array.prototype.indexOf) {
	Array.prototype.indexOf = function(searchElement /*, fromIndex */ ) {
		"use strict";
		if (this === void 0 || this === null)
			throw new TypeError();

		var t = Object(this);
		var len = t.length >>> 0;
		if (len === 0)
			return - 1;

		var n = 0;
		if (arguments.length > 0) {
			n = Number(arguments[1]);
			if (n !== n)
			// shortcut for verifying if it's NaN
			n = 0;
			else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0))
			n = (n > 0 || -1) * Math.floor(Math.abs(n));
		}

		if (n >= len)
			return - 1;

		var k = n >= 0 ? n : Math.max(len - Math.abs(n), 0);

		for (; k < len; k++) {
			if (k in t && t[k] === searchElement)
				return k;
		}

		return - 1;
	};
}

if (!window.blockNSPageTrack) {
	document.write(unescape("%3Cscript src='" + environ['ADVLOGGING_PATH'] + "pageTrack.php?cid=" + campaignSettings['NAME'] + "&url=" + escape(escape(document.location)) + "&ts=" + (new Date().getTime()) + "' type='text/javascript'%3E%3C/script%3E"));
}

if (!window['netShelter']) 
	window['netShelter'] = {};

netShelter.TrackingAPI = {
	'NAP':						'nap',
	'N2A':						'n2a'
}

netShelter.TrackableGenre = {
	'CLICK':					'click',
	'ENGAGEMENT':				'engagement',
	'HOVER':					'hover',
	'IMPRESSION':				'impression',
	'MEDIA':					'media'
}

netShelter.TrackableCategory = {
	'BRANDING':					'branding',
	'COMPLETE':					'complete',
	'CONSUME':					'consume',
	'CONTENT':					'content',
	'CONTROL':					'control',
	'FOLLOW':					'follow',
	'LOAD':						'load',
	'SERVE':					'serve',
	'SHARE':					'share',
	'TIME':						'time',
	'VIEW':						'view'
}

netShelter.TrackableSubcategory = {
	'COLLECT':					'collect',
	'CREATIVE':					'creative',
	'CUSTOM':					'custom',
	'EXPORT':					'export',
	'FILTER':					'filter',
	'HIDE':						'hide',
	'PRODUCT':					'product',
	'PUBLISHER':				'publisher',
	'SCROLL':					'scroll',
	'SHARE':					'share',
	'SOCIAL':					'social',
	'STORY':					'story',
	'VIDEO':					'video',
	'WHITEPAPER':				'whitepaper'
}

netShelter.TrackableKind = {
	'ARTICLE':					'article',
	'PLAY':						'play',
	'PRECIS':					'precis',
	'SUMMARY':					'summary'
}

netShelter.TrackablePlacement = {
	'COMMUNITY_STREAM':			'community_stream',
	'EXTERNAL':					'external',
	'FOLLOW_BUTTON':			'follow_button',
	'HEADER':					'header',
	'MASTHEAD':					'masthead',
	'PRODUCT_INFO':				'product_info',
	'SHARE_BAR':				'share_bar',
	'SPLASH':					'splash',
	'STORY_FEED':				'story_feed',
	'STORY_PRECIS':				'story_precis',
	'VIDEO_FEED':				'video_feed',
	'VIDEO_PLAYER':				'video_player',
	'WHITEPAPER_FEED':			'whitepaper_feed'
}

netShelter.TrackableAsset = {
	'BACKGROUND':				'background',
	'CALL_TO_ACTION':			'call_to_action',
	'CLOSE_BUTTON':				'close_button',
	'ENTER_FULL_SCREEN_BUTTON':	'enter_full_screen_button',
	'EXIT_FULL_SCREEN_BUTTON':	'exit_full_screen_button',
	'FOLLOW_BUTTON':			'follow_button',
	'HEADLINE':					'headline',
	'LOGO':						'logo',
	'MUTE_BUTTON':				'mute_button',
	'NEXT_ARROW':				'next_arrow',
	'PREVIOUS_ARROW':			'previous_arrow',
	'PRODUCT_IMAGE':			'product_image',
	'PAUSE_BUTTON':				'pause_button',
	'PLAY_BUTTON':				'play_button',
	'SCROLL_BAR':				'scroll_bar',
	'SHARE_BUTTON':				'share_button',
	'TIMELINE':					'timeline',
	'UNMUTE_BUTTON':			'unmute_button'
}

netShelter.TrackableAssetSource = {
	'DELIMITER':				'.',
	'FACEBOOK':					'facebook',
	'GOOGLE_PLUS':				'google_plus',
	'N2I':						'n2i',
	'SHOPLOCAL':				'shoplocal',
	'TWITTER':					'twitter',
	'URL':						'url',
	'YOUTUBE':					'youtube'
}

netShelter.SOCIAL_SITE_PREFIX = "social.";

netShelter.expectedTrackingKeys = [
	'guid',
	'sessionID',
	'experienceID',
	'parent',
	'campaign',
	'creative',
	'creativeSize',
	'site',
	'genre',
	'category',
	'subcategory',
	'kind',
	'placement',
	'asset',
	'label',
	'value',
	'x',
	'y',
	'redir'
];

netShelter.trackingInfo = {
	'guid':					null,
	'sessionID':			null,
	'experienceID':			null,
	'parent':				null,
	'campaign':				null,
	'creative':				null,
	'creativeSize':			null,
	'site':					null
}


netShelter.addListenerTo = function(element, type, handler) {
	if (element.addEventListener)
		element.addEventListener(type, handler, false);
	else
		element.attachEvent('on' + type, handler);
}


// Noting DOMLoaded so we don't document.write after the document is closed.
netShelter.domLoaded = false;

netShelter.setDOMLoaded = function(event) {
	netShelter.domLoaded = true;
}

// Most modern browsers
netShelter.addListenerTo(document, 'DOMContentLoaded', netShelter.setDOMLoaded);

// IE < 9
if (document.attachEvent) {
	if (document.readyState && document.readyState == 'complete') {
		netShelter.setDOMLoaded();
	} else {
		document.attachEvent('onreadystatechange', function(event) {
			if (this.readyState == 'complete')
				netShelter.setDOMLoaded(event);
		});
	}
}

// Just-in-case
netShelter.addListenerTo(window, 'load', netShelter.setDOMLoaded);

// Cloaking the English word for chocolate-chip baked good to appease the DFP gods.
netShelter['coo' + "kie"] = netShelter['coo' + "kie"] || {
	// From http://www.quirksmode.org/
	'get': function(name) {
		var nameEQ = name + "=";
		var ca = document['coo' + "kie"].split(';');
	
		for(var i=0;i < ca.length;i++) {
			var c = ca[i];
		
			while (c.charAt(0)==' ') 
				c = c.substring(1,c.length);
		
			if (c.indexOf(nameEQ) == 0) 
				return c.substring(nameEQ.length,c.length);
		}
		return null;
	},

	'set': function(name, value, days) {
		if (days) {
			var date = new Date();
			date.setTime(date.getTime()+(days*24*60*60*1000));
			var expires = "; expires="+date.toGMTString();
		}
		else var expires = "";
		document['coo' + "kie"] = name+"="+value+expires+"; path=/";
	},

	'clear': function (name) {
		netShelter['coo' + "kie"].set(name,"",-1);
	}
};

netShelter.setGUID = function(guid, guidAddendum) {
	netShelter['coo' + "kie"].set('ns_user', [guid, guidAddendum].join());
}

if (!NS_GUID) {
	var NS_userData = netShelter['coo' + "kie"].get('ns_user');
	
	if (NS_userData) {
		NS_userData = decodeURIComponent(NS_userData);
		
		var NS_GUID_delimiterPosition = NS_userData.indexOf(':');
	
		var NS_GUID = NS_userData.substring(0, NS_GUID_delimiterPosition);
		var NS_GUID_addendum = NS_userData.substring(NS_GUID_delimiterPosition);
	}
}

netShelter.populateQueryDict = function(event) {
	netShelter.queryDict = netShelter.dictFromQueryString(window.location.search.substring(1));
}

netShelter.populateTrackingInfo = function(event) {
	with (netShelter) {
		if (!netShelter.hasOwnProperty('queryDict'))
			populateQueryDict();
		
		if (queryDict.hasOwnProperty('parent'))
			trackingInfo.parent = trackingInfo.parent || queryDict.parent;
		
		trackingInfo.experienceID = trackingInfo.experienceID || queryDict.experienceID || generateRandomMD5();
		trackingInfo.guid = trackingInfo.guid || NS_GUID;	// Default value set by pageTrack
		trackingInfo.sessionID = trackingInfo.sessionID || generateRandomMD5();

		trackingInfo.site = trackingInfo.site || queryDict.site || 'direct';
	}
}

netShelter['trackEvent'] = function(parameters, api, version) {
	/*	Tracks an event to the backend specified by api and version. 
	 *	Defaults to NetShelter Analytics Platform (NAP).
	 */
	
	try {
		with (netShelter) {
			switch (api) {
				case TrackingAPI.NAP:
				default:
					var path = _getURLToTrackEvent(parameters, api, version);

					var img = document.createElement("img");
					img.setAttribute("src", path); 
					img.setAttribute("width", 0);
					img.setAttribute("height", 0);
					img.setAttribute("border", 0);
					img.style.display = "block";
					img.style.position = "absolute";

					/*	Append a new img tag to the DOM to trigger the
					 *  request.  Consider using XMLHTTPRequest instead 
					 *  to avoid polluting the DOM.
					 *  
					 *  SERVE events need to be recorded immediately, so
					 *  we use document.write for those.
					 */
					
					if (!domLoaded && parameters.genre == TrackableGenre.IMPRESSION && parameters.category == TrackableCategory.SERVE) {
						var imgAsString = (img.outerHTML)
							? img.outerHTML
							: new XMLSerializer().serializeToString(img);

						document.write(imgAsString);
					} else {
						document.body.appendChild(img);
					}
					
					break;
			}
		}
	} catch (error) {
		if (window.console && console.log) {
			console.log(error);
			
			if (error.description)
				console.log(error.description);
		}
	}
}

netShelter['trackEventAndOpenPopup'] = function(parameters, destination, api, version) {
	/*	Tracks an event in a popup window that redirects to the destination 
	 *	specified.  You could just supply a redir parameter in your trackEvent 
	 *	call, but that would be less obvious for someone reading your code later.
	 */
	
	with (netShelter) {
		switch (api) {
			case TrackingAPI.NAP:
			default:
				parameters.redir = parameters.redir || destination;
				openPopup(_getURLToTrackEvent(parameters, api, version));
				break;
		}
	}
}

netShelter['trackEventsThen'] = function(/* ...events, callback, url */) {
	var argumentCount = arguments.length;
	var events = Array.prototype.slice.call(arguments, 0, argumentCount - 2);
	var callback = arguments[argumentCount - 2];
	var url = arguments[argumentCount - 1];
	
	var path = url;
	
	for (var i = events.length - 1; i >= 0; i--) {
		events[i].redir = path;
		
		// This uses the default tracking API and version.
		path = netShelter._getURLToTrackEvent(events[i]);
	}

	callback(path);
}

netShelter['_getURLToTrackEvent'] = function(parameters, api, version) {
	/*	This is the actual meat of the analytics library.  It constructs the URL
	 *	that tracks an event.  The other functions just have to request the 
	 *	returned URL to send the event to the server.
	 */
	
	try {
		with (netShelter) {
			switch (api) {
				case TrackingAPI.NAP:
				default:
					if (!trackingInfo.sessionID)
						populateTrackingInfo();
					
					// Set default values
					version = version || 'v1';

					// This used to be done with parameters.__proto__, but IE disagreed.
					for (var defaultKey in trackingInfo) {
						if (!parameters.hasOwnProperty(defaultKey) && [undefined, null].indexOf(trackingInfo[defaultKey]) == -1)
							parameters[defaultKey] = trackingInfo[defaultKey];
					}

					for (var key in parameters) {
						if (
							expectedTrackingKeys.indexOf(key) == -1 &&
							window.console && console.log
						)
							console.log('NAP didn\'t recognize "' + key + '".  Are you sure that\'s what you meant to send?');
					}

					parameters.ts = new Date().valueOf();	// Cache-busting timestamp
					
					return environ['NAP_PATH'] + version + '/nap-track.php?' + dictToQueryString(parameters, true);
			}
		}
	} catch (error) {
		if (window.console && console.log) {
			console.log(error);
			
			if (error.description)
				console.log(error.description);
		}
	}
}

netShelter.startTrackingTimeSpent = function(timeSpentIncrement) {
	timeSpentIncrement = timeSpentIncrement || 3000;
	
	netShelter._timeSpentInterval = setInterval(
		function(event) {
			with (netShelter) {
				trackEvent({
					'genre':		TrackableGenre.IMPRESSION,
					'category':		TrackableCategory.TIME,
					'value':		timeSpentIncrement
				});
			}
		}, timeSpentIncrement
	);
}

netShelter.stopTrackingTimeSpent = function() {
	clearInterval(netShelter._timeSpentInterval);
}

// Flash can call this function to open a new window without resistance IE7's popup blocker	
netShelter['openPopup'] = function(path) {
	window.open(path, '_blank');
}

netShelter['dictToQueryString'] = function(dict, ignoreNull) {
	/*	URL encodes a query in the format:
	 *
	 * 	 encodedKey1=encodedValue1&encodedKey2=encodedValue2
	 */
	
	var encodedPairs = [];
	
	for (var key in dict) {
		if (!ignoreNull || ([null, undefined].indexOf(dict[key]) == -1))
			encodedPairs.push(encodeURIComponent(key) + '=' + encodeURIComponent(dict[key]));
	}
	
	return encodedPairs.join('&');
}

netShelter['dictFromQueryString'] = function(queryString) {
	var dict = {};
	var encodedPairs = queryString.split('&');
	
	for (var i = 0; i < encodedPairs.length; i++) {
		var encodedTuple = encodedPairs[i].split('=');
		
		if (encodedTuple.length >= 1) {
			// There should only be one = in a pair, but in case there are extras, leave them there and count the first one as the delimiter
			var key = decodeURIComponent(encodedTuple.shift());
			var value = decodeURIComponent(encodedTuple.join('='));
		
			// Protect against crazy things like "?key1=value1&"
			if (key.length)
				dict[key] = value;
		}
	}
	
	return dict;
}

netShelter['getDictWithoutTrackingInfo'] = function(source, addSocialTrackingInfo) {
	with (netShelter) {
		var result = {};
	
		for (var key in source) {
			if (expectedTrackingKeys.indexOf(key) == -1)
				result[key] = source[key];
		}
	
		if (addSocialTrackingInfo) {
			result['campaign'] = trackingInfo.campaign;
			result['site'] = (trackingInfo.site.indexOf(SOCIAL_SITE_PREFIX) == -1)
				? SOCIAL_SITE_PREFIX + trackingInfo.site
				: trackingInfo.site;
			result['parent'] = trackingInfo.parent;
		}
	
		return result;
	}
}

netShelter['generateRandomMD5'] = function() {
	// Pick a random value in a 128-bit space to MD5.  (128-bits is 3.4e38) 
	var randomString = String(Math.round(2 * Math.random()));
	
	for (var i = 0; i < 38; i++) {
		randomString += String(Math.round(9 * Math.random()));
	}
	
	return netShelter.crypto.MD5(randomString);
}

netShelter.crypto = {
	'MD5':	function(string) {
		// courtesy of http://css-tricks.com/snippets/javascript/javascript-md5/
	function RotateLeft(lValue, iShiftBits) {
			return (lValue<<iShiftBits) | (lValue>>>(32-iShiftBits));
	}

	function AddUnsigned(lX,lY) {
			var lX4,lY4,lX8,lY8,lResult;
			lX8 = (lX & 0x80000000);
			lY8 = (lY & 0x80000000);
			lX4 = (lX & 0x40000000);
			lY4 = (lY & 0x40000000);
			lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF);
			if (lX4 & lY4) {
					return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
			}
			if (lX4 | lY4) {
					if (lResult & 0x40000000) {
							return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
					} else {
							return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
					}
			} else {
					return (lResult ^ lX8 ^ lY8);
			}
	}

	function F(x,y,z) { return (x & y) | ((~x) & z); }
	function G(x,y,z) { return (x & z) | (y & (~z)); }
	function H(x,y,z) { return (x ^ y ^ z); }
	function I(x,y,z) { return (y ^ (x | (~z))); }

	function FF(a,b,c,d,x,s,ac) {
			a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
			return AddUnsigned(RotateLeft(a, s), b);
	};

	function GG(a,b,c,d,x,s,ac) {
			a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
			return AddUnsigned(RotateLeft(a, s), b);
	};

	function HH(a,b,c,d,x,s,ac) {
			a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
			return AddUnsigned(RotateLeft(a, s), b);
	};

	function II(a,b,c,d,x,s,ac) {
			a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
			return AddUnsigned(RotateLeft(a, s), b);
	};

	function ConvertToWordArray(string) {
			var lWordCount;
			var lMessageLength = string.length;
			var lNumberOfWords_temp1=lMessageLength + 8;
			var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64;
			var lNumberOfWords = (lNumberOfWords_temp2+1)*16;
			var lWordArray=Array(lNumberOfWords-1);
			var lBytePosition = 0;
			var lByteCount = 0;
			while ( lByteCount < lMessageLength ) {
					lWordCount = (lByteCount-(lByteCount % 4))/4;
					lBytePosition = (lByteCount % 4)*8;
					lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount)<<lBytePosition));
					lByteCount++;
			}
			lWordCount = (lByteCount-(lByteCount % 4))/4;
			lBytePosition = (lByteCount % 4)*8;
			lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80<<lBytePosition);
			lWordArray[lNumberOfWords-2] = lMessageLength<<3;
			lWordArray[lNumberOfWords-1] = lMessageLength>>>29;
			return lWordArray;
	};

	function WordToHex(lValue) {
			var WordToHexValue="",WordToHexValue_temp="",lByte,lCount;
			for (lCount = 0;lCount<=3;lCount++) {
					lByte = (lValue>>>(lCount*8)) & 255;
					WordToHexValue_temp = "0" + lByte.toString(16);
					WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2);
			}
			return WordToHexValue;
	};

	function Utf8Encode(string) {
			string = string.replace(/\r\n/g,"\n");
			var utftext = "";

			for (var n = 0; n < string.length; n++) {

					var c = string.charCodeAt(n);

					if (c < 128) {
							utftext += String.fromCharCode(c);
					}
					else if((c > 127) && (c < 2048)) {
							utftext += String.fromCharCode((c >> 6) | 192);
							utftext += String.fromCharCode((c & 63) | 128);
					}
					else {
							utftext += String.fromCharCode((c >> 12) | 224);
							utftext += String.fromCharCode(((c >> 6) & 63) | 128);
							utftext += String.fromCharCode((c & 63) | 128);
					}

			}

			return utftext;
	};

	var x=Array();
	var k,AA,BB,CC,DD,a,b,c,d;
	var S11=7, S12=12, S13=17, S14=22;
	var S21=5, S22=9 , S23=14, S24=20;
	var S31=4, S32=11, S33=16, S34=23;
	var S41=6, S42=10, S43=15, S44=21;

	string = Utf8Encode(string);

	x = ConvertToWordArray(string);

	a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;

	for (k=0;k<x.length;k+=16) {
		AA=a; BB=b; CC=c; DD=d;
		a=FF(a,b,c,d,x[k+0], S11,0xD76AA478);
		d=FF(d,a,b,c,x[k+1], S12,0xE8C7B756);
		c=FF(c,d,a,b,x[k+2], S13,0x242070DB);
		b=FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE);
		a=FF(a,b,c,d,x[k+4], S11,0xF57C0FAF);
		d=FF(d,a,b,c,x[k+5], S12,0x4787C62A);
		c=FF(c,d,a,b,x[k+6], S13,0xA8304613);
		b=FF(b,c,d,a,x[k+7], S14,0xFD469501);
		a=FF(a,b,c,d,x[k+8], S11,0x698098D8);
		d=FF(d,a,b,c,x[k+9], S12,0x8B44F7AF);
		c=FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1);
		b=FF(b,c,d,a,x[k+11],S14,0x895CD7BE);
		a=FF(a,b,c,d,x[k+12],S11,0x6B901122);
		d=FF(d,a,b,c,x[k+13],S12,0xFD987193);
		c=FF(c,d,a,b,x[k+14],S13,0xA679438E);
		b=FF(b,c,d,a,x[k+15],S14,0x49B40821);
		a=GG(a,b,c,d,x[k+1], S21,0xF61E2562);
		d=GG(d,a,b,c,x[k+6], S22,0xC040B340);
		c=GG(c,d,a,b,x[k+11],S23,0x265E5A51);
		b=GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA);
		a=GG(a,b,c,d,x[k+5], S21,0xD62F105D);
		d=GG(d,a,b,c,x[k+10],S22,0x2441453);
		c=GG(c,d,a,b,x[k+15],S23,0xD8A1E681);
		b=GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8);
		a=GG(a,b,c,d,x[k+9], S21,0x21E1CDE6);
		d=GG(d,a,b,c,x[k+14],S22,0xC33707D6);
		c=GG(c,d,a,b,x[k+3], S23,0xF4D50D87);
		b=GG(b,c,d,a,x[k+8], S24,0x455A14ED);
		a=GG(a,b,c,d,x[k+13],S21,0xA9E3E905);
		d=GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8);
		c=GG(c,d,a,b,x[k+7], S23,0x676F02D9);
		b=GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A);
		a=HH(a,b,c,d,x[k+5], S31,0xFFFA3942);
		d=HH(d,a,b,c,x[k+8], S32,0x8771F681);
		c=HH(c,d,a,b,x[k+11],S33,0x6D9D6122);
		b=HH(b,c,d,a,x[k+14],S34,0xFDE5380C);
		a=HH(a,b,c,d,x[k+1], S31,0xA4BEEA44);
		d=HH(d,a,b,c,x[k+4], S32,0x4BDECFA9);
		c=HH(c,d,a,b,x[k+7], S33,0xF6BB4B60);
		b=HH(b,c,d,a,x[k+10],S34,0xBEBFBC70);
		a=HH(a,b,c,d,x[k+13],S31,0x289B7EC6);
		d=HH(d,a,b,c,x[k+0], S32,0xEAA127FA);
		c=HH(c,d,a,b,x[k+3], S33,0xD4EF3085);
		b=HH(b,c,d,a,x[k+6], S34,0x4881D05);
		a=HH(a,b,c,d,x[k+9], S31,0xD9D4D039);
		d=HH(d,a,b,c,x[k+12],S32,0xE6DB99E5);
		c=HH(c,d,a,b,x[k+15],S33,0x1FA27CF8);
		b=HH(b,c,d,a,x[k+2], S34,0xC4AC5665);
		a=II(a,b,c,d,x[k+0], S41,0xF4292244);
		d=II(d,a,b,c,x[k+7], S42,0x432AFF97);
		c=II(c,d,a,b,x[k+14],S43,0xAB9423A7);
		b=II(b,c,d,a,x[k+5], S44,0xFC93A039);
		a=II(a,b,c,d,x[k+12],S41,0x655B59C3);
		d=II(d,a,b,c,x[k+3], S42,0x8F0CCC92);
		c=II(c,d,a,b,x[k+10],S43,0xFFEFF47D);
		b=II(b,c,d,a,x[k+1], S44,0x85845DD1);
		a=II(a,b,c,d,x[k+8], S41,0x6FA87E4F);
		d=II(d,a,b,c,x[k+15],S42,0xFE2CE6E0);
		c=II(c,d,a,b,x[k+6], S43,0xA3014314);
		b=II(b,c,d,a,x[k+13],S44,0x4E0811A1);
		a=II(a,b,c,d,x[k+4], S41,0xF7537E82);
		d=II(d,a,b,c,x[k+11],S42,0xBD3AF235);
		c=II(c,d,a,b,x[k+2], S43,0x2AD7D2BB);
		b=II(b,c,d,a,x[k+9], S44,0xEB86D391);
		a=AddUnsigned(a,AA);
		b=AddUnsigned(b,BB);
		c=AddUnsigned(c,CC);
		d=AddUnsigned(d,DD);
		}

		var temp = WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d);

		return temp.toLowerCase();
	}
}