//##############################################################################
//# ajax.js                                                                    #
//##############################################################################
//# YaBB: Yet another Bulletin Board                                           #
//# Open-Source Community Software for Webmasters                              #
//# Version:        YaBB 2.6.14                                                #
//# Packaged:       July 26, 2026                                            #
//# Distributed by: http://yabbforum.nz                                   #
//# ===========================================================================#
//# Copyright (c) 2000-2026 YaBB (yabbforum.nz) - All Rights Reserved.    #
//# Software by:  The YaBB Development Team                                    #
//#               with assistance from the YaBB community.                     #
//##############################################################################

//YaBB 2.6.14 $Revision: 1611 $

var xmlHttp = null;
var browser = '';
var imagedir = '';
var cachedPostPage;
var cachedIMPage;
var iframeloaded = 0;

if (navigator.appName == "Microsoft Internet Explorer") {
    browser = "block";
} else {
    browser = "table";
}

function Collapse_All (url,action,imgdir,lng) {
    GetXmlHttpObject();
    if (xmlHttp == null) {
        window.location = url + ";oldcollapse=1";
        return;
    }

    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);

    var i = 0;
    var noboards = "";
    var boards = "";
    var imgsrc = "";
    if (action == 1) {
        boards = browser;
        noboards = "none";
        imgsrc = "/" + brd_col;
        document.getElementById("expandall").style.display = "none";
        document.getElementById("collapseall").style.display = "";
    } else {
        noboards = "";
        boards = "none";
        imgsrc = "/" + brd_exp;
        document.getElementById("expandall").style.display = "";
        document.getElementById("collapseall").style.display = "none";
    }
    for (i = 0 ; i < catNames.length; i++) {
        document.getElementById(catNames[i]).style.display = boards;
        document.getElementById("col"+catNames[i]).style.display = noboards;
        document.getElementById("img"+catNames[i]).src = imgdir + imgsrc;
        document.getElementById("img"+catNames[i]).title = lng;
        document.getElementById("img"+catNames[i]).alt = lng;
    }
}

function SendRequest (url,cat,imgdir,lng_collapse,lng_expand) {
    GetXmlHttpObject();
    if (xmlHttp == null) {
        window.location = url + ";oldcollapse=1";
        return;
    }

    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);

    var open = 0;
    var closed = 0;
    var board = '';
    if (document.getElementById(cat).style.display == "none") {
        document.getElementById(cat).style.display = browser;
        document.getElementById("col"+cat).style.display = "none";
        document.getElementById("img"+cat).src = imgdir+"/"+brd_col;
        document.getElementById("img"+cat).title = lng_collapse;
        document.getElementById("img"+cat).alt = lng_collapse;
        document.getElementById("collapseall").style.display = "";
    } else {
        document.getElementById(cat).style.display = "none";
        document.getElementById("col"+cat).style.display = "";
        document.getElementById("img"+cat).src = imgdir+"/"+brd_exp;
        document.getElementById("img"+cat).title = lng_expand;
        document.getElementById("img"+cat).alt = lng_expand;
        document.getElementById("expandall").style.display = "";
    }
    for (i = 0; i < catNames.length; i++) {
        if (document.getElementById(catNames[i]).style.display == "none") { closed++; }
        else { open++; }
    }
    if (closed == catNames.length) {
        document.getElementById("collapseall").style.display = "none";
        document.getElementById("expandall").style.display = "";
    }
    if (open == catNames.length) {
        document.getElementById("collapseall").style.display = "";
        document.getElementById("expandall").style.display = "none";
    }
}

function MarkAllAsRead(url,imgdir,lang,brdid) {
    if (lang == 1) {
        markallreadlanguage = markthreadslang;
    } else {
        markallreadlanguage = markallreadlang;
    }
    GetXmlHttpObject();
    if (xmlHttp == null) {
        window.location = url + ";oldmarkread=1";
        return;
    }
    imagedir = imgdir;
    boardid = brdid;
    boardid_sub = brdid + '_sub';
    var imagealert = document.getElementById("ImageAlert");
    var imagebody = document.getElementById("ImageAlertBody");
    document.getElementById("ImageAlertIFrame").style.display = "none";
    imagebody.style.display = "block";

    var insert = '<div class="topper">'+markallreadlanguage+'</div><div class="rotate"><img src="' + imagedir + '/Rotate.gif">';
    imagebody.innerHTML = insert;
    imagebody.style.width = "230px";
    imagebody.style.height = "100px";
    imagealert.style.display = "block";
    imagealert.style.visibility = "visible";
    imagealert.style.marginLeft = "-115px";
    imagealert.style.marginTop = "-50px";
    xmlHttp.onreadystatechange=MarkFinished;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
}

function MarkFinished() {
    if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete") {
        var insert = '<div class="topper">'+markfinishedlang+'</div><div class="rotate"><img src="' + imagedir + '/Rotate.gif">';
        document.getElementById("ImageAlertBody").innerHTML = insert;
        setTimeout("HideAlert()",1500);
        var images = document.getElementsByTagName("img");
        for (var i=0; i<images.length; i++) {
            var src = images[i].getAttribute("src");
            if (src.match("/" + brd_new ) && images[i].getAttribute("id") == boardid) {
                document.getElementById(boardid).src = imagedir + "/" + brd_old;
            }
            else if (src.match("/" + sub_brd_new) && images[i].getAttribute("id") == boardid_sub) {
                document.getElementById(boardid_sub).src = imagedir + "/" + sub_brd_old;
            }
            else if (!images[i].id.match("no_edit") && boardid == 1) {
                if (src.match("/" + brd_new )) {
                    images[i].setAttribute("src",src.replace("/" + brd_new ,"/" + brd_old));
                }
                else if (src.match("/" + sub_brd_new)) {
                    images[i].setAttribute("src",src.replace("/" + sub_brd_new,"/" + sub_brd_old));
                }
            }
            else if (src.match(imclose)) {
                images[i].setAttribute("src",src.replace(imclose,imopen));
            }
            else if (src.match(imclose2)) {
                images[i].setAttribute("src",src.replace(imclose2,imopen2));
            }
        }
        var newlinks = document.getElementsByTagName("span");
        for (var e=0; e<newlinks.length; e++) {
            if (newlinks[e].className == "NewLinks") {
                newlinks[e].style.display = "none";
            }
        }
    }
}

function AddRemFav(url,imgdir) {
    GetXmlHttpObject();
    if (xmlHttp == null) {
        window.location = url + ";oldaddfav=1";
        return;
    }
    imagedir = imgdir;

    var imagealert = document.getElementById("ImageAlert");
    var imagebody = document.getElementById("ImageAlertBody");
    document.getElementById("ImageAlertIFrame").style.display = "none";
    imagebody.style.display = "block";

    var text;
    if (url.match("addfav")) {
        text = addfavlang;
        if(document.postmodify != null) { document.postmodify.favorite.checked = 'checked'; }
    } else {
        text = remfavlang;
        if(document.postmodify != null) { document.postmodify.favorite.checked = ''; }
    }

    var insert = '<div class="topper">'+text+'</div><div class="rotate"><img src="' + imagedir + '/Rotate.gif"></div>';
    imagebody.innerHTML = insert;
    imagebody.style.width = "230px";
    imagebody.style.height = "100px";
    imagealert.style.display = "block";
    imagealert.style.visibility = "visible";
    imagealert.style.marginLeft = "-115px";
    imagealert.style.marginTop = "-50px";

    xmlHttp.onreadystatechange=AddRemFavFinished;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
}


function AddRemFavFinished() {
    if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {
        document.getElementById("ImageAlertBody").innerHTML = '<div class="topper">'+markfinishedlang+'</div><div class="rotate">&nbsp;</div>';
        setTimeout("HideAlert()",1500);
        var links = document.getElementById("favlink");
        var href = links.href;
        if (href.match("addfav")) {
            links.setAttribute("href",href.replace("addfav","remfav"));
            links.innerHTML = remlink;
        }
        if (href.match("remfav")) {
            links.setAttribute("href",href.replace("remfav","addfav"));
            links.innerHTML = addlink;
        }
        var links = document.getElementById("favlink2");
        var href = links.href;
        if (href.match("addfav")) {
            links.setAttribute("href",href.replace("addfav","remfav"));
            links.innerHTML = remlink;
        }
        if (href.match("remfav")) {
            links.setAttribute("href",href.replace("remfav","addfav"));
            links.innerHTML = addlink;
        }
    }
}

function Notify(url,imgdir) {
    GetXmlHttpObject();
    if (xmlHttp == null) {
        window.location = url + ";oldnotify=1";
        return;
    }
    imagedir = imgdir;

    var imagealert = document.getElementById("ImageAlert");
    var imagebody = document.getElementById("ImageAlertBody");
    document.getElementById("ImageAlertIFrame").style.display = "none";
    imagebody.style.display = "block";

    var text;
    if (url.match("notify2")) {
        text = addnotelang;
        if(document.postmodify != null) { document.postmodify.notify.checked = 'checked'; }
    } else {
        text = remnotelang;
        if(document.postmodify != null) { document.postmodify.notify.checked = ''; }
    }

    var insert = '<div class="topper">'+text+'</div><div class="rotate"><img src="' + imagedir + '/Rotate.gif"></div>';
    imagebody.innerHTML = insert;
    imagebody.style.width = "230px";
    imagebody.style.height = "100px";
    imagealert.style.display = "block";
    imagealert.style.visibility = "visible";
    imagealert.style.marginLeft = "-115px";
    imagealert.style.marginTop = "-50px";

    xmlHttp.onreadystatechange=NotifyFinished;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
}

function NotifyFinished() {
    if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {
        document.getElementById("ImageAlertBody").innerHTML = '<div class="topper">'+markfinishedlang+'</div><div class="rotate">&nbsp;</div>';
        setTimeout("HideAlert()",1500);
        var links = document.getElementById("notifylink");
        var href = links.href;
        if (href.match("notify2")) {
            links.setAttribute("href",href.replace("notify2","notify3"));
            links.innerHTML = remnotlink;
        }
        if (href.match("notify3")) {
            links.setAttribute("href",href.replace("notify3","notify2"));
            links.innerHTML = addnotlink;
        }
        var links = document.getElementById("notifylink2");
        var href = links.href;
        if (href.match("notify2")) {
            links.setAttribute("href",href.replace("notify2","notify3"));
            links.innerHTML = remnotlink;
        }
        if (href.match("notify3")) {
            links.setAttribute("href",href.replace("notify3","notify2"));
            links.innerHTML = addnotlink;
        }
    }
}

// Load a pop up post page

function PostPage(url, postboard) {
    GetXmlHttpObject();
    if (xmlHttp == null) {
        window.location = url;
        return;
    }
    var imagealert = document.getElementById("ImageAlert");
    var imageframe = document.getElementById("ImageAlertIFrame");
    var imagebody = document.getElementById("ImageAlertBody");
    imagebody.style.display = "none";
    imagealert.style.display = "block";
    imagealert.style.visibility = "visible";
    imageframe.style.width = "800px";

    if (!cachedPostPage) {
        if (cachedIMPage) { ResizeIFrame(50); }
        document.getElementById("ImageAlertLoad").style.display = "block";
        imageframe.height = 0;
        imageframe.src = url + ";popup=1";
        curboard = postboard;
        cachedPostPage = 1;
    } else {
        if (postboard != curboard) {
            var act = imageframe.contentDocument.forms.postmodify.action;
            act = act.replace("board="+curboard,"board="+postboard);
            imageframe.contentDocument.forms.postmodify.action = act;
            curboard = postboard;
        }
        imageframe.contentWindow.ResizeIFrame();
    }
    cachedIMPage = 0;
    imagealert.style.marginLeft = "-410px";
    imageframe.style.display = "block";
}

function IMPage(url,name,id) {
    GetXmlHttpObject();
    if (xmlHttp == null) {
        window.location = url;
        return;
    }
    var imagealert = document.getElementById("ImageAlert");
    var imageframe = document.getElementById("ImageAlertIFrame");
    var imagebody = document.getElementById("ImageAlertBody");
    imagebody.style.display = "none";
    imagealert.style.display = "block";
    imagealert.style.visibility = "visible";
    imageframe.style.width = "650px";

    if (!cachedIMPage) {
        if (cachedPostPage) { ResizeIFrame(50); }
        document.getElementById("ImageAlertLoad").style.display = "block";
        imageframe.height = 0;
        imageframe.src = url + ";popup=1";
        cachedIMPage = 1;
    } else {
        imageframe.contentWindow.ResizeIFrame();
        var toshow = imageframe.contentDocument.getElementById("toshow");
        for (var i = 0; i < toshow.options.length; i++) {
            toshow.remove(i);
        }

        var tmp_option = imageframe.contentDocument.createElement("option");
        tmp_option.value = id;
        tmp_option.text = name;
        toshow.appendChild(tmp_option);
    }
    cachedPostPage = 0;
    imagealert.style.marginLeft = "-335px";
    imageframe.style.display = "block";
}

// Drop down message index for board index

function MessageList(url,includejs,board,loadnew) {
    // close previously opened board
    if(boardOpen != "" && !loadnew) {
        document.getElementById("droprow_"+boardOpen).style.display = "none";
        document.getElementById("dropbutton_"+boardOpen).src = openbutton;
        cachedBoards[boardOpen] = document.getElementById("drop_"+boardOpen).innerHTML;
        if (boardOpen == board) {
            boardOpen = "";
            return;
        }
    }

    GetXmlHttpObject();
    if (xmlHttp == null) {
        window.location = url.substring(0,url.length - 14);
        return;
    }

    boardOpen = board;

    document.getElementById("dropbutton_"+board).src = closebutton;

    if (cachedBoards[board] == null || loadnew) {
        MessageListInsert('<img src="'+loadimg+'" />');
        xmlHttp.onreadystatechange=MessageListFinished;
        xmlHttp.open("GET",url+";r="+Math.random(),true);
        xmlHttp.send(null);
    } else {
        if (document.getElementById("drop_"+boardOpen).innerHTML == "") {
            MessageListInsert(cachedBoards[board]);
        } else {
            document.getElementById("droprow_"+boardOpen).style.display = "table-row";
        }
    }

    var MIscript = document.createElement('script');
    MIscript.setAttribute("type","text/javascript");
    MIscript.setAttribute("src", includejs+'/MessageIndex.js');
    document.getElementsByTagName("head")[0].appendChild(MIscript);
}

function MessageListFinished() {
    if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {
        var r = xmlHttp.responseText;
        cachedBoards[boardOpen] = r;
        MessageListInsert(r);
        if (document.getElementById("RunSelDec")) {
            eval(document.getElementById("RunSelDec").innerHTML);
        }
    }
}

function MessageListInsert(code) {
    document.getElementById("drop_"+boardOpen).innerHTML = code;
    document.getElementById("droprow_"+boardOpen).style.display = "table-row";
}

// drop down sub board display

function SubBoardList(url,board,cat,subcount,index) {
    GetXmlHttpObject();
    if (xmlHttp == null) {
        window.location = url;
        return;
    }

    // close any opened MessageList
    if (boardOpen != "") {
        MessageList("",boardOpen,0);
    }

    // close previously opened board
    if(subboardOpen != "") {
        var del = document.getElementById(insertcat).rows;
        var len = del.length;
        for (var i = 0; i < len; i++) {
            if (del.item(i).className == "subboards_of_" + subboardOpen) {
                document.getElementById(insertcat).deleteRow(i);
                len--;
                i--;
            }
        }
        document.getElementById("subdropbutton_"+subboardOpen).src = opensubbutton;
        if (subboardOpen == board) {
            subboardOpen = "";
            return;
        }
    }

    subboardOpen = board;
    insertindex = index;
    insertcat = cat;
    prev_subcount = subcount;

    document.getElementById("subdropbutton_"+board).src = closesubbutton;

    if (cachedSubBoards[board] == null) {
        document.getElementById("dropsub_" + subboardOpen).innerHTML = '<img src="'+loadimg+'" />';
        document.getElementById("dropsubrow_" + subboardOpen).style.display = "table-row";

        xmlHttp.onreadystatechange=SubBoardListFinished;
        xmlHttp.open("GET",url + ";a=1;r="+Math.random(),true);
        xmlHttp.send(null);
    } else {
        document.getElementById("dropsub_" + subboardOpen).innerHTML = cachedSubBoards[board];
        InsertSubBoards(index, cat);
    }
}

function SubBoardListFinished() {
    if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {
        var r = xmlHttp.responseText;
        cachedSubBoards[subboardOpen] = r;
        document.getElementById("dropsubrow_" + subboardOpen).style.display = "none";
        document.getElementById("dropsub_" + subboardOpen).innerHTML = r;
        InsertSubBoards(insertindex, insertcat);
    }
}

function InsertSubBoards(index, cat) {
    var table = document.getElementById("subloaded_"+subboardOpen);

    var cattable = document.getElementById(cat);

    var i;
    for (i = table.rows.length - 1; i >= 0 ; i--) {
        var row = cattable.insertRow((index+1) * 3);
        row.className = "subboards_of_" + subboardOpen;
        row.id = table.rows.item(i).id;
        row.style.cssText = table.rows.item(i).style.cssText;

        var cells = table.rows.item(i).cells;

        for (var j = cells.length - 1; j >= 0; j--) {
            var cell = row.insertCell(0);
            cell.className = cells.item(j).className;
            cell.style.cssText = cells.item(j).style.cssText;
            //cell.align = cells.item(j).align;
            //cell.width = cells.item(j).width;
            cell.colSpan = cells.item(j).colSpan;
            cell.innerHTML = cells.item(j).innerHTML;
        }
    }
    MakeCollapseBars(cattable, (index+1) * 3);
    MakeCollapseBars(cattable, (index+1) * 3 + table.rows.length + 1);

    document.getElementById("dropsub_" + subboardOpen).innerHTML = "";
}

function MakeCollapseBars(table, index) {
    var row = table.insertRow(index);
    row.className = "subboards_of_" + subboardOpen;
    var cell = row.insertCell(0);
    cell.colSpan = "5";
    //cell.align = "center";
    cell.className = "tabtitle-sub";
    cell.innerHTML = arrowup;
    cell.style.cursor = "pointer";
    cell.onclick = function () {
        var elem = document.getElementById("subdropa_"+subboardOpen);
        if (typeof elem.onclick == "function") {
            elem.onclick.apply(elem);
        }
    };
}

// Quick switcher for message index page listing

function SwitchPageList(oldurl, sendurl, closelist, openlist) {
    GetXmlHttpObject();
    if (xmlHttp == null) {
        window.location = url;
        return;
    }

    document.getElementById(closelist).style.display = "none";
    document.getElementById('2'+closelist).style.display = "none";
    document.getElementById(openlist).style.display = "inline-block";
    document.getElementById('2'+openlist).style.display = "inline-block";

    xmlHttp.open("GET",sendurl,true);
    xmlHttp.send(null);
}

function AlertResults()
{
    if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {
        alert(xmlHttp.responseText);
    }
}

// Login check credentials

function CheckCredentials(url) {
    GetXmlHttpObject();
    if (xmlHttp == null) {
        document.loginform.action = url.substring(0,url.length - 15);
        document.loginform.onsubmit = null;
        document.loginform.submit();
        return;
    }
    var params = "username=" + document.getElementById("username").value + "&passwrd=" + document.getElementById("passwrd").value + "&cookielength=" + document.getElementById("cookielength").value + "&formsession=" + document.forms[0].formsession.value + "&sredir=" + document.loginform.sredir.value;

    xmlHttp.onreadystatechange=CredentialResults;
    xmlHttp.open("POST",url,true);
    xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    xmlHttp.setRequestHeader("Content-length", params.length);
    xmlHttp.setRequestHeader("Connection", "close");
    xmlHttp.send(params);
}

function CredentialResults() {
    if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {
        var r = xmlHttp.responseText;
        if(r.substring(0,5) == "error") {
            document.getElementById("credresults").innerHTML = r.substring(5);
        } else {
            document.getElementById("credresults").style.display = "none";
            document.getElementById("credresults").innerHTML = r;
            window.location = r.substring(r.indexOf("confirmed") + 9);
        }
    }
}

function enterKey(e) {
    var e = window.event || e;
    if(e.keyCode == 13){
        document.loginform.submitlogin.click();
    }
}

//---------------
// Member Search
//---------------
var list = new Array();
var list2 = new Array();
var first = "";

function LetterChange(text) {
    text = text.toLowerCase()
    if (text.length == 1) {
        if (list[text] == null) {
            first = text;
            SendLetter(text);
        } else {
            first = text;
            ListNames(list[text],list2[text]);
        }
    } else if (text.length > 1) {
        var temp = new Array();
        var temp2 = new Array();
        for(var i = 0; i < list[first].length; i++) {
            text = text.toLowerCase();
            var regex = new RegExp("^" + text);
            if(list[first][i].toLowerCase().match(regex)) {
                temp[temp.length] = list[first][i];
                temp2[temp2.length] = list2[first][i];
            }
        }
        ListNames(temp,temp2);
    }
}

function SendLetter(letter) {
    GetXmlHttpObject();
    if (xmlHttp == null) { alert("AJAX not supported."); return; }
    document.getElementById("load").src = imageurl + "/mozilla_blu.gif";
    xmlHttp.onreadystatechange=Response;
    xmlHttp.open("GET", scripturl + "?action=qsearch2;letter=" + letter, true);
    xmlHttp.send(null);
}

function Response() {
    if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete") {
        document.getElementById("load").src = imageurl + "/mozilla_gray.gif";
        var results = new Array();
        document.getElementById("response").innerHTML = xmlHttp.responseText;
        list[first] = new Array();
        list2[first] = new Array();
        var temp = new Array();
        temp = document.getElementById("response").innerHTML.split(",");
        for (var i = 0; i < temp.length; i++) {
            if ((i % 2) === 0) { list[first][list[first].length] = temp[i]; }
            else { list2[first][list2[first].length] = temp[i]; }
        }
        if (list[first] == "") { list[first] = new Array(); }
        ListNames(list[first],list2[first]);
    }
}

function ListNames(names,ids) {
        var select = document.getElementById("rec_list");
        select.options.length = 0;
        for (var i = 0; i < names.length; i++) {
            browserAdd(names[i],ids[i]);
        }
        if (select.options.length === 0) { browserAdd(noresults,""); }
}

function browserAdd(name,value) {
    var select = document.getElementById("rec_list");
    if (navigator.appName == "Microsoft Internet Explorer") {
        select.add(new Option(name,value));
    } else {
        select.add(new Option(name,value),null);
    }
}
// End Member Search

// Check username availability
function checkAvail(scripturl,val,type,namenotid) {

    document.getElementById(type + "availability").innerHTML = '';
    if (val == '') return;

    var tmptype = type;
    if (namenotid == 1) {
        if (type == 'user')    { if (val == document.getElementById('regrealname').value) tmptype = 'nouserid'; }
        if (type == 'display') { if (val == document.getElementById('regusername').value) tmptype = 'nodisplay'; }
    }
    var valstr = '';
    for (i = 0; i < val.length; i++) {
        if (val.charCodeAt(i) > 127) valstr += '[ch' + val.charCodeAt(i) + ']';
        else valstr += val.charAt(i);
    }
    var urivalstr = encodeURIComponent(valstr);
    GetXmlHttpObject();
    if (xmlHttp == null) { alert("AJAX not supported."); return; }
    xmlHttp.onreadystatechange=returnAvail;
    xmlHttp.open("GET", scripturl + "?action=checkavail;type=" + tmptype + ";" + type + "=" + urivalstr, true);
    xmlHttp.send(null);
}

function returnAvail() {
    if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete") {
        var avail = xmlHttp.responseText;
        var type = avail.split("|");
        document.getElementById(type[0] + "availability").innerHTML = type[1];
    }
}

function HideAlert() {
    document.getElementById("ImageAlert").style.display = "none";
    document.getElementById("ImageAlert").style.visibility = "hidden";
}

function GetXmlHttpObject() {
    try { // test if ajax is supported
        if (typeof( new XMLHttpRequest() ) == 'object') {
            xmlHttp = new XMLHttpRequest();
        } else if (typeof( new ActiveXObject("Msxml2.XMLHTTP.6.0") ) == 'object') {
            xmlHttp = new ActiveXObject("Msxml2.XMLHTTP.6.0");
        } else if (typeof( new ActiveXObject("Msxml2.XMLHTTP.3.0") ) == 'object') {
            xmlHttp = new ActiveXObject("Msxml2.XMLHTTP.3.0");
        } else if (typeof( new ActiveXObject("Msxml2.XMLHTTP") ) == 'object') {
            xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
        } else if (typeof( new ActiveXObject("Microsoft.XMLHTTP") ) == 'object') {
            xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
    } catch (e) { }
}
