AddNamespace("NPR.metrics");

NPR.metrics.constants = {};
NPR.metrics.constants.SEARCH_CONDUCTED = 'event1';
NPR.metrics.constants.PAGEVIEW = 'event2';
NPR.metrics.constants.REGISTRATION = 'event3';
NPR.metrics.constants.PROMOTION = 'event4';
NPR.metrics.constants.LOGIN = 'event5';
NPR.metrics.constants.EMAIL_STORY = 'event9';
NPR.metrics.constants.NEWSLETTER_SUBSCRIBE = 'event10';
NPR.metrics.constants.NEWSLETTER_UNSUBSCRIBE = 'event11';
NPR.metrics.constants.COMMENT_ADDED = 'event13';
NPR.metrics.constants.CONTACT_US = 'event14';
NPR.metrics.constants.STATION_DRAWER_OPEN = 'event15';
NPR.metrics.constants.LISTEN_DRAWER_OPEN = 'event16';
NPR.metrics.constants.CLICK_RSS_LINK = 'event8';
NPR.metrics.constants.CLICK_PODCAST_LINK = 'event18';
NPR.metrics.constants.AUTO_REFRESH = 'event19';
NPR.metrics.constants.IMAGE_ENLARGEMENT = 'event22';
NPR.metrics.constants.ADD_TO_PLAYLIST = 'event23';
NPR.metrics.constants.SPONSOR_DRAWER_OPEN = 'event24';
NPR.metrics.constants.STATION_SEARCH = 'event27';
NPR.metrics.constants.STATION_SEARCH_DONATE = 'event28';
NPR.metrics.constants.STATION_LINK_CLICKED = 'event29';
NPR.metrics.constants.STATION_HEADLINE_CLICKED = 'event45';
NPR.metrics.constants.ERROR_PAGE_TYPE = 'errorPage';

if (typeof get_cookie === 'undefined') {
    get_cookie = function( name ) {    
        var start = document.cookie.indexOf( name + "=" );
        var len = start + name.length + 1;
        if ( ( !start ) &&
             ( name !== document.cookie.substring( 0, name.length ) ) ) {
            return null;
        }
        if ( start === -1 ) return null;
        var end = document.cookie.indexOf( ";", len );
        if ( end === -1 ) end = document.cookie.length;
        return unescape( document.cookie.substring( len, end ) );
    }
}

NPR.metrics.variables = {};

if(NPR.metrics.vscount != null) {
    NPR.metrics.vscount = NPR.metrics.vscount + 1;
    NPR.metrics.variables["logCount"] = NPR.metrics.vscount;
}
else { 
    NPR.metrics.vscount = 1;
}

NPR.metrics.host = "http://www.npr.org";
if (document.location.href.indexOf("shop.npr.org") > -1) {
    NPR.metrics.host = "//v2.npr.org";
}
else if (document.location.href.indexOf("https:") > -1) {
    NPR.metrics.host = "https://v.npr.org";
}

NPR.metrics.variables["sw"] = screen.width;
NPR.metrics.variables["sh"] = screen.height;
NPR.metrics.variables["cd"] = screen.colorDepth;
NPR.metrics.variables["dr"] = document.referrer;
NPR.metrics.variables["cb"] = new Date().getTime();

NPR.metrics.clearVars = function() {
    if(typeof s !== 'undefined') { // not sure why it would be...
        for(var key in s) { if(key.indexOf('eVar')===0 || key.indexOf('prop')===0) {delete s[key];}}
    }
}

NPR.metrics.getTags = function() {
    var vo = "";
    for ( vKey in NPR.metrics.variables ) {
        vo = vo+"&"+vKey+"="+escape(NPR.metrics.variables[vKey]);
    }

    if(NPR.metrics.vstag) {
        for (vKey in NPR.metrics.vstag) {
            if(vKey != 'title' && vKey != 'dt') {
            vo = vo+"&"+vKey+"="+ NPR.metrics.vstag[vKey];
            }
        }
    }
    else {
        NPR.metrics.vstag = {};
    }
    
    if(NPR.metrics.vstag.title) {
        var title = NPR.metrics.vstag.title;
    
        /*Begin kludge for Visual Science functionality*/
                title = unescape(title);
                title = escape(title);
        /*End kludge for Visual Science functionality */
        
        vo = vo+"&dt="+title;
    }
    else {
        vo = vo+"&dt="+escape(document.title);
    }

    var userCookie = get_cookie('at');
    //read their cookie to see if they are logged in
    if (userCookie !== null) {
        var cookieParts = userCookie.split("&");
        for (var index = 0; index < cookieParts.length; index++)
        {
            var argParts = cookieParts[index].split("=");
            if (argParts.length === 2) {
                var key = argParts[0];
                var value = argParts[1];

                //userid
                if (key === "u") {
                    var userHash = NPR.MD5(value);
                    vo = vo+"&userHash="+userHash;
                    NPR.metrics.vstag["userHash"]=userHash;
                }
                if (key === "tier") {
                    vo = vo+"&userTier="+value;
                    NPR.metrics.vstag["tier"]=value;
                }
            }
        }
    }
    
    var stationCookie = get_cookie('station');   
    NPR.metrics.vstag["preferredStation"]=stationCookie;
        
    return vo;
};

NPR.metrics.fixEncoding = function(oldString) {
    var newString = oldString.replace(/\+/g,' ');
    return decodeURIComponent(newString);
};

NPR.metrics.pageImpression = function() {
    
    // Set Omniture Variables

    s.pageName="";
    
    s.server="";
    s.channel="";

    s.pageType="";
    if (NPR.metrics.vstag.omniturePageType) {
        s.pageType=NPR.metrics.vstag.omniturePageType;
    }

    var pageTitle = document.title;
    pageTitle = pageTitle.replace(/NPR\:/,'');
    pageTitle = pageTitle.replace(/NPR\s\:/,'');
    pageTitle = pageTitle.replace(/NPR\-/,'');
    pageTitle = pageTitle.replace(/NPR\s\-/,'');
    
    if(NPR.metrics.vstag.title) {
        pageTitle = NPR.metrics.fixEncoding(NPR.metrics.vstag["title"]);
    }
        
    s.pageName=pageTitle;
    s.prop3=pageTitle;
    
    if (NPR.metrics.vstag.storyId) {
        s.prop4=NPR.metrics.vstag["storyId"];
        
      
        //initialize click map plug-in
        if(s.prop4 === '1002')
        { 
        	s.setupDynamicObjectIDs();        
        }
    }
    else {
        s.prop4=0;
    }

    if(NPR.metrics.vstag.omnitureNamePrefix) {
        s.pageName=NPR.metrics.fixEncoding(NPR.metrics.vstag.omnitureNamePrefix) + s.pageName;
        s.prop3=s.pageName;
    }

    if(NPR.metrics.vstag.omnitureNameSuffix) {
        s.pageName=s.pageName + NPR.metrics.fixEncoding(NPR.metrics.vstag.omnitureNameSuffix);
        s.prop3=s.pageName;
    }
    
    if (NPR.metrics.vstag.text) { 
        s.prop1=NPR.metrics.fixEncoding(NPR.metrics.vstag["text"].toLowerCase());
        s.prop2="zero";  // default is no search results, will be overwritten below if > 0
        if (NPR.metrics.vstag.searchResults && NPR.metrics.vstag.searchResults > 0) {
            s.prop2=NPR.metrics.vstag["searchResults"];
        }
    }
        
    s.prop5=NPR.metrics.vstag["pageTypeId"];
    if (NPR.metrics.vstag.omnitureContentType) {
        s.prop5=NPR.metrics.vstag["omnitureContentType"];
    }

    // bug SFW-604
    if(!(NPR.metrics.vstag["primaryTopic"] || NPR.metrics.vstag["assignedTopics"])) { // undefined, null, empty, false -- all the same for this purpose
        switch(NPR.metrics.vstag["programId"]) {
            case '4':     // Performance Today
            case '19':    // Jazz Profiles
            case '20':    // JazzSet with Dee Dee Bridgewater
            case '24':    // Marian McPartland's Piano Jazz
            case '31':    // Symphonycast
            case '34':    // Thistle & Shamrock
            case '36':    // World of Opera
            case '37':    // All Songs Considered
            case '39':    // World Cafe
            case '43':    // From the Top
                NPR.metrics.vstag["primaryTopic"] = '1039'; // Music
                NPR.metrics.vstag["assignedTopics"] = '1039';
                break;
        }
    }
    
    s.prop6=document.location.hostname;
    s.prop7=NPR.metrics.vstag["primaryTopic"];
    s.prop8=NPR.metrics.vstag["tier"];
    s.prop12=NPR.metrics.vstag["howLongAgo"];
    s.prop13=NPR.metrics.vstag["userHash"];
    s.prop14=NPR.metrics.vstag["pageDepth"];
    s.prop15=NPR.metrics.vstag["segNum"];
    s.prop16=NPR.metrics.vstag["preferredStation"];
    s.channel=NPR.metrics.vstag["channel"];
    
    if(NPR.metrics.vstag.hierarchy) {
    	s.hier1 = NPR.metrics.fixEncoding(NPR.metrics.vstag["hierarchy"]);
    }
    
       
    // get the canoical url by figuring out the id query param and removing everything else  
    // just use the relative path, as well
    var idString = document.location.search.replace(/.*([?&]\w*id=\d+).*/i, "$1");
    idString = idString.replace(/^&/, '?');
    
    // bug 9813. Need to strip some suffix
    var idString4Prop17 = idString;
    idString4Prop17 = idString4Prop17.replace(/([?&]ps=[^?&#]+)/gi,"");
    idString4Prop17 = idString4Prop17.replace(/([?&]text=[^?&#]+)/gi,"");
    idString4Prop17 = idString4Prop17.replace(/([?&]pageDepth=[^?&#]+)/gi,"");
    idString4Prop17 = idString4Prop17.replace(/([?&]value[^?&#]+)/gi,"");
    idString4Prop17 = idString4Prop17.replace(/([?&]ft=[^?&#]+)/gi,"");
    idString4Prop17 = idString4Prop17.replace(/([?&]f=[^?&#]+)/gi,"");
    s.prop17 = document.location.pathname + idString4Prop17;
    s.prop18=NPR.metrics.vstag["assignedTopics"];
    s.prop19=NPR.metrics.vstag["date"];
    s.prop20=NPR.metrics.vstag["orgId"];
    s.prop21=NPR.metrics.vstag["programId"];
    s.prop22=NPR.metrics.vstag["searchProgramId"];
    s.prop23=NPR.metrics.vstag["searchTopicId"];
    s.prop24=NPR.metrics.vstag["storyLength"];
    if (NPR.metrics.vstag.byline) {
        s.prop30=NPR.metrics.fixEncoding(NPR.metrics.vstag["byline"]);
    }
    s.prop31=NPR.metrics.vstag["aggIds"];
    s.prop32=NPR.metrics.vstag["artists"];

    s.events="";
    if(NPR.metrics.vstag.omnitureEvent) {
        s.events=NPR.metrics.vstag.omnitureEvent;
    }


    // fixes bug 9793
    var psarray = document.URL.split('ps=');
    if(psarray.length>1)
    {
        var psvalue = psarray[1].split('&')[0];
        s.prop37=psvalue;
        s.eVar37=psvalue;
        s.events += (s.events?',':'')+NPR.metrics.constants.PROMOTION;
    }

    // bug SFW-433
    // we'll consider these in order, so add new ones with that in mind
    // we could probably do this as one giant regex, but this will be easier to understand later
    var regExps = [new RegExp('/programs/[^/]+/'),
                   new RegExp('/news/specials/[^/]+/'),
                   new RegExp('/blogs/[^/]+/'),
                   new RegExp('/.*/')];
    var uriexcerpt = false;
    var matchArray = false;
    var pathOnly = document.URL.split('npr.org', 2)[1];
    
    for(var ri=0;ri<regExps.length;ri++) {
        matchArray = regExps[ri].exec(pathOnly);
        if(matchArray && matchArray.length) {
            uriexcerpt = matchArray[0];
            break;
        }
    }
    
    if(uriexcerpt !== false) {
        s.prop33=uriexcerpt;
    }
        
    //SFW-2029
    s.prop45 = NPR.metrics.vstag["profileTier"];
    
    var products = [];
   
    if (NPR.metrics.vstag.aggIds && NPR.metrics.vstag.aggIds.length > 0) {
    	products.push(NPR.metrics.vstag["aggIds"]);
    }

    if (NPR.metrics.vstag.assignedTopics && NPR.metrics.vstag.assignedTopics.length > 0) {
    	products.push(NPR.metrics.vstag["assignedTopics"]);
    }

    if (NPR.metrics.vstag.byline && NPR.metrics.vstag.byline.length > 0) {
    	products.push(NPR.metrics.fixEncoding(NPR.metrics.vstag["byline"]));
    }

    if (NPR.metrics.vstag.artists && NPR.metrics.vstag.artists.length > 0) {
    	products.push(NPR.metrics.vstag["artists"]);
    }
    
    if (products.length > 0) {
    	var uniqueProducts = "";
    	
    	//only add unique values
    	for(var pi = 0; pi < products.length; pi++) {
    		if (uniqueProducts.indexOf(products[pi]) === -1){
    			uniqueProducts += products[pi] + ',';
    		}
    	}
    	
    	//remove the last comma
    	uniqueProducts = uniqueProducts.substring(0, uniqueProducts.length - 1);
    	s.products = ";" + uniqueProducts.replace(/,/g, ",;");
    }

    if(NPR.metrics.vstag.omniturePageName) {
        s.pageName=NPR.metrics.fixEncoding(NPR.metrics.vstag.omniturePageName);
        s.prop3=s.pageName;
    }

    //sfw-2004
    if(s.events.match(NPR.metrics.constants.EMAIL_STORY) !== null)
    {
	    s.prop41 = NPR.metrics.vstag["programId"];
	    s.prop42 = NPR.metrics.vstag["primaryTopic"];
	    s.prop34 = NPR.metrics.vstag["emailedURL"];
	    s.prop40 = NPR.metrics.vstag["ctRecipients"];
    }
    
    if(document.URL.indexOf("refresh=true")>-1) // fixes bug 9902
    {
        // should we do a call to NPR.metrics.pageEvent instead?
        s.events=NPR.metrics.constants.AUTO_REFRESH;
        s.linkTrackVars='events,prop17,eVar17';
        s.linkTrackEvents=NPR.metrics.constants.AUTO_REFRESH;
        s_code=s.tl(true, 'o', s.events);
    }
    else
    {
        s_code=s.t();
    }
};

NPR.metrics.pageEvent = function(vsEventName, thisObj, stationLetters, headline) {
	
	if (vsEventName === 'comment_added') {

        s.linkTrackVars='events,prop17,eVar17';
        s.linkTrackEvents=NPR.metrics.constants.COMMENT_ADDED;
        s.events=NPR.metrics.constants.COMMENT_ADDED;
        s.tl(true,'o', NPR.metrics.constants.COMMENT_ADDED);
    }
	else if (vsEventName === 'station_headline_clicked') {
		s.linkTrackVars='eVar16,events';
		s.linkTrackEvents=NPR.metrics.constants.STATION_HEADLINE_CLICKED;
		s.events=NPR.metrics.constants.STATION_HEADLINE_CLICKED;
		s.eVar16=stationLetters;
		s.tl(this,'o', stationLetters + ':' + headline);         
    }
    else if (vsEventName === 'station_search') {
    	s.linkTrackVars='events,prop17,eVar17,prop43,eVar43';
        s.linkTrackEvents=NPR.metrics.constants.STATION_SEARCH;
    	s.events=NPR.metrics.constants.STATION_SEARCH;
   	      	
        s.tl(thisObj,'o', NPR.metrics.constants.STATION_SEARCH_PERFORMED);
    }
    else if (vsEventName === 'station_search_donate') {
    	s.linkTrackVars='events,prop17,eVar17,prop43,eVar43';
        s.linkTrackEvents=NPR.metrics.constants.STATION_SEARCH_DONATE;
    	s.events=NPR.metrics.constants.STATION_SEARCH_DONATE;
   	      	
        s.tl(thisObj,'o', NPR.metrics.constants.STATION_SEARCH_PERFORMED);
    }
    else if (vsEventName === 'station_link_clicked') {
    	s.linkTrackVars='events,prop17,eVar17,eVar35';
        s.linkTrackEvents=NPR.metrics.constants.STATION_LINK_CLICKED;
    	s.events=NPR.metrics.constants.STATION_LINK_CLICKED;
    	
        s.tl(thisObj,'o', NPR.metrics.constants.STATION_LINK_CLICKED);
    }
    else if (vsEventName === NPR.metrics.constants.CLICK_RSS_LINK 		||
             vsEventName === NPR.metrics.constants.CLICK_PODCAST_LINK	||
             vsEventName === NPR.metrics.constants.IMAGE_ENLARGEMENT	||
             vsEventName === NPR.metrics.constants.ADD_TO_PLAYLIST		||
             vsEventName === NPR.metrics.constants.STATION_DRAWER_OPEN	||
             vsEventName === NPR.metrics.constants.LISTEN_DRAWER_OPEN	||
             vsEventName === NPR.metrics.constants.SPONSOR_DRAWER_OPEN) {
    	
        s.linkTrackVars='events,prop17,eVar17';
        s.linkTrackEvents=vsEventName;
        s.events=vsEventName;
        s.tl(true,'o', vsEventName);
    }
};

NPR.MD5 = function (string) {

    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();
}