var rDiv = roomWin.document.getElementById('rtext');      var numChildren = rDiv.childNodes.length;      if(numChildren > 0){        return rDiv.childNodes[0];      }      return null;}function hasPeople(roomWin){  // The div to write to:      var rDiv = roomWin.document.getElementById('rtext');      var numChildren = rDiv.childNodes.length;      if(numChildren > 0){        return true;      }      return false;}function insertText(yakWin, text){    // The div to write to:    var yakDiv = yakWin.document.getElementById('ytext');    // Create a new span node in the yakDiv. Record the num of nodes right now - used later    // to see if the node was really added:    var chatLineDiv = yakWin.document.createElement("div");    chatLineDiv.setAttribute("class", "private-message");    try {        chatLineDiv.innerHTML = "<span class='private-message'>"+text+"</span>";        yakDiv.appendChild(chatLineDiv);    }    catch (exception) {    }}function insertHistoryText(yakWin, text){    // The div to write to:    var yakDiv = yakWin.document.getElementById('ytext');    // Create a new span node in the yakDiv. Record the num of nodes right now - used later    // to see if the node was really added:    var chatLineDiv = yakWin.document.createElement("div");    chatLineDiv.setAttribute("class", "history-message");    try {        chatLineDiv.innerHTML = "<span class='history-message'>"+text+"</span>";        yakDiv.appendChild(chatLineDiv);    }    catch (exception) {    }}function insertErrorText(yakWin, text){    // The div to write to:    var yakDiv = yakWin.document.getElementById('ytext');    // Create a new span node in the yakDiv. Record the num of nodes right now - used later    // to see if the node was really added:    var chatLineDiv = yakWin.document.createElement("div");    chatLineDiv.setAttribute("class", "error-message");    try {        chatLineDiv.innerHTML = "<span class='error-message'>"+text+"</span>";        yakDiv.appendChild(chatLineDiv);    }    catch (exception) {    }}function clearChat(yakWin){   // The div to write to:    var yakDiv = yakWin.document.getElementById('ytext');    var numChildren = yakDiv.childNodes.length;    for(i=0;i<numChildren;i++){      var chatLineDiv = yakDiv.childNodes[i];      yakDiv.removeChild(chatLineDiv);      numChildren = yakDiv.childNodes.length;      if(numChildren == 0){        return;      }    }}function addChatText(yakWin, from, text) {    // The div to write to:    var yakDiv = yakWin.document.getElementById('ytext');    // This will be an announcement if there is no from passed in    var isAnnouncement = (from == "");    // Create a new span node in the yakDiv. Record the num of nodes right now - used later    // to see if the node was really added:    var numChildren = yakDiv.childNodes.length;    var nameSpan = document.createElement("span");    var textSpan = document.createElement("span");    if (isAnnouncement) {        nameSpan.setAttribute("class", "chat-announcement");        textSpan.setAttribute("class", "chat-announcement");    }    else {        textSpan.setAttribute("class", "text");    }    // add another span containing the username if this is not an announcement:    var fromIsCurrentUser = false;    if (!isAnnouncement) {        // is the from the same as the current user?        fromIsCurrentUser = (nickname == from);        if (fromIsCurrentUser) {            nameSpan.setAttribute("class", "client-name");        }        else {            nameSpan.setAttribute("class", "operator-name");        }    }    var chatLineDiv = document.createElement("div");    chatLineDiv.setAttribute("class", "chat-line");    var appendFailed = false;    try {        if (!isAnnouncement) {            nameSpan.innerHTML = from + ": ";            chatLineDiv.appendChild(nameSpan);        }        textSpan.innerHTML = text;        chatLineDiv.appendChild(textSpan);        yakDiv.appendChild(chatLineDiv);    }    catch (exception) {        appendFailed = true;    }    if (!appendFailed) {        // Make sure the browser appended:        appendFailed = (numChildren == yakDiv.childNodes.length);    }    if (appendFailed) {        var inn = yakDiv.innerHTML;        inn += "<div class=\"chat-line\">";        if (!isAnnouncement) {            inn += "<span class=\"";            if (isAnnouncement) {                inn += "chat-announcement";            }            else if (fromIsCurrentUser) {                inn += "client-name";            }            else {                inn += "operator-name";            }            inn += "\">" + from + ": </span>";            // yakDiv.innerHTML = inn;        }        // var inn = yakDiv.innerHTML;        inn += "<span class=\"";        inn += (isAnnouncement ? "chat-announcement\">" : "chat_text\">");        inn += text + "</span></div>";        yakDiv.innerHTML = inn;    }    else {        // yakDiv.appendChild(document.createElement("br"));    }}function addChatTextAndDate(yakWin, date, from, text) {    // The div to write to:    var yakDiv = yakWin.document.getElementById('ytext');    // This will be an announcement if there is no from passed in    var isAnnouncement = (from == "");    // Create a new span node in the yakDiv. Record the num of nodes right now - used later    // to see if the node was really added:    var numChildren = yakDiv.childNodes.length;    var nameSpan = document.createElement("span");    var textSpan = document.createElement("span");    if (isAnnouncement) {        nameSpan.setAttribute("class", "chat-announcement");        textSpan.setAttribute("class", "chat-announcement");    }    else {        textSpan.setAttribute("class", "text");    }    // add another span containing the username if this is not an announcement:    var fromIsCurrentUser = false;    if (!isAnnouncement) {        // is the from the same as the current user?        fromIsCurrentUser = (nickname == from);        if (fromIsCurrentUser) {            nameSpan.setAttribute("class", "client-name");        }        else {            nameSpan.setAttribute("class", "operator-name");        }    }    if(!isAnnouncement && !fromIsCurrentUser){        var encodedFrom = escape(from);          from = "<a class=\"operator-name\" href=javascript:parent.openIM('"+encodedFrom+"')> "+from+"</a>";    }    var chatLineDiv = document.createElement("div");    chatLineDiv.setAttribute("class", "chat-line");    var appendFailed = false;    try {        if (!isAnnouncement) {            nameSpan.innerHTML = date+" "+from + ": ";            chatLineDiv.appendChild(nameSpan);        }        textSpan.innerHTML = text;        chatLineDiv.appendChild(textSpan);        yakDiv.appendChild(chatLineDiv);    }    catch (exception) {        appendFailed = true;    }    if (!appendFailed) {        // Make sure the browser appended:        appendFailed = (numChildren == yakDiv.childNodes.length);    }    if (appendFailed) {        var inn = yakDiv.innerHTML;        inn += "<div class=\"chat-line\">";        if (!isAnnouncement) {            inn += "<span class=\"";            if (isAnnouncement) {                inn += "chat-announcement";            }            else if (fromIsCurrentUser) {                inn += "client-name";            }            else {                inn += "operator-name";            }            inn += "\">" + date+ " "+from + ": </span>";            // yakDiv.innerHTML = inn;        }        // var inn = yakDiv.innerHTML;        inn += "<span class=\"";        inn += (isAnnouncement ? "chat-announcement\">" : "chat_text\">");        inn += text + "</span></div>";        yakDiv.innerHTML = inn;    }    else {        // yakDiv.appendChild(document.createElement("br"));    }}function addHistoryText(yakWin, date, from, text) {    // The div to write to:    var yakDiv = yakWin.document.getElementById('ytext');    // This will be an announcement if there is no from passed in    var isAnnouncement = (from == "" || from == null);    // Create a new span node in the yakDiv. Record the num of nodes right now - used later    // to see if the node was really added:    var numChildren = yakDiv.childNodes.length;    var nameSpan = document.createElement("span");    var textSpan = document.createElement("span");    nameSpan.setAttribute("class", "history-message");    textSpan.setAttribute("class", "chat-line");    // add another span containing the username if this is not an announcement:    var fromIsCurrentUser = false;    if (!isAnnouncement) {        // is the from the same as the current user?        fromIsCurrentUser = (nickname == from);    }    else {        textSpan.setAttribute("class", "history-message");    }    var chatLineDiv = document.createElement("div");    var appendFailed = false;    try {        if (!isAnnouncement) {            nameSpan.innerHTML = date+" "+from + ": ";            chatLineDiv.appendChild(nameSpan);        }        textSpan.innerHTML = text;        chatLineDiv.appendChild(textSpan);        yakDiv.appendChild(chatLineDiv);    }    catch (exception) {        appendFailed = true;    }    if (!appendFailed) {        // Make sure the browser appended:        appendFailed = (numChildren == yakDiv.childNodes.length);    }    if (appendFailed) {        var inn = yakDiv.innerHTML;        inn += "<div class=\"history-message\">";        if (!isAnnouncement) {            inn += "<span class=\"";            if (isAnnouncement) {                inn += "history-message";            }            else if (fromIsCurrentUser) {                inn += "history-message";            }            else {                inn += "history-message";            }            inn += "\">" + date+" "+from + ": </span>";            // yakDiv.innerHTML = inn;        }        // var inn = yakDiv.innerHTML;        inn += "<span class=\"";        inn += (isAnnouncement ? "history-message\">" : "history-message\">");        inn += text + "</span></div>";        yakDiv.innerHTML = inn;    }}function addPrivateMessage(yakWin, from, text) {    // The div to write to:    var yakDiv = yakWin.document.getElementById('ytext');    var lineDiv = yakWin.document.createElement("div");    var isCurrentUser = (nickname == from);    // This will be an announcement if there is no from passed in    var newMessage = "<table width=100%>";    var participant = escape(from);    var link = "<a href=javascript:parent.openIM('"+participant+"')><b><u>"+text+"</b></u></a><br/>";      newMessage += "<tr><td class=private-message colspan=2>Private Message from " + from + " (Click to join)</td></tr>";    newMessage += "<tr height=1><td colspan=2 bgcolor=#d3d5d6 height=1></td></tr>";    newMessage += "<tr><td colspan=2 class=chat-line>" + link + "</td></tr>";    newMessage += "</table>";    lineDiv.innerHTML = newMessage;    yakDiv.appendChild(lineDiv);}function scrollYakToEnd (yakWin) {    var endDiv = yakWin.document.getElementById('enddiv');    yakWin.scrollTo(0, yakWin.document.body.scrollHeight);}function scroll(yakWin){ yakWin.scrollBy(0, 40);}