var chapterCount=0
var currentChapter=1;
var amInChapter=false;

chaptersDefined=true;

// Are we being called with a placement instruction

var loc=document.location.toString();
var iHash = loc.indexOf("#");
if (iHash>-1)
{
    var locator = loc.substr(iHash+1);
    currentChapter = parseInt(locator);
    if (isNaN(currentChapter) || currentChapter<0) currentChapter=1;
    if (is.ie) location.hash="";
    if (amLoaded)
    {
        JumpToChapter(currentChapter);
    }
}

function BeginChapter()
{
    var out;
    var top;

    if (is.major<4) return;
    if (is.ie || is.nn)
    {
        var thedoc;
        if (is.ie) thedoc=document;
        else thedoc=document.layers["outer"].document;

        chapterCount++;
        //out = "<div id=chapter"+chapterCount+" name=chapter" + chapterCount + " style=' height:400; width:533; margin:0; ";
        //if (chapterCount==1) out+="visibility:hidden; position:absolute; top:0; left:0; overflow:clip; clip:rect(0, 533, 400, 0);";
        //else  out+="visibility:hidden; position:absolute; top:0; left:0; overflow:clip; clip:auto;";

        //out+="'>"
        out = "<div id=chapter"+chapterCount+" name=chapter" + chapterCount + " class='chapter'>\r\n";
        thedoc.write(out);

        amInChapter=true;
    }
}

function ChapterBack()
{
    JumpToChapter(currentChapter-1)
    return;
}

function ChapterNext()
{
    JumpToChapter(currentChapter+1)
    return;
}


function EndChapter()
{
    var out;
    if (is.major<4 || !amInChapter) return;

    amInChapter=false

    out = "</div>\r\n";

    var chapter = "chapter" + chapterCount;
    if (is.ie) thedoc=document;
    else thedoc=document.layers["outer"].document[chapter].document;

    thedoc.write(out);

}

function DeclareChapters()
{
    if (is.major<4 || chapterCount>0) return;

    if (is.ie)
    {
	document.write("<div id='outer' class='outer' style='position:relative; visibility:visible; top:0; left:0; height:420; width:100%;'>\r\n");

    }

}


function StopChapters()
{
    if (is.major<4) return;

    if (is.ie)
    {
	document.write("</div>");

    }

}


function JumpToChapter(newChapter)
{
    if (is.major<4 || newChapter<1 || newChapter>chapterCount) return;

    var chapter = "chapter" + currentChapter;

    if (is.ie)
    {

        if (newChapter != currentChapter) document.all[chapter].style.visibility="hidden";
        /*if (currentChapter==1)
        {
            document.all["btnBack"].style.visibility="visible";
        }
        else if (currentChapter==chapterCount)
        {
            document.all["btnNext"].style.visibility="visible";
        }*/
    }
    else if (is.nn)
    {

        if (newChapter != currentChapter) document.layers["outer"].document[chapter].visibility="hidden";
        /*if (currentChapter==1)
        {
             document.layers["lbtnBack"].visibility="visible";
        }
        else if (currentChapter==chapterCount)
        {
             document.layers["lbtnNext"].visibility="visible";
        }*/
    }

    currentChapter=newChapter;
    chapter = "chapter" + currentChapter;

    if (is.ie)
    {

        document.all[chapter].style.visibility="visible";
        if (currentChapter==chapterCount)
        {
            document.all["btnNext"].style.visibility="hidden";
        }
        else
        {
            document.all["btnNext"].style.visibility="visible";
        }

        if (currentChapter==1)
        {
            document.all["btnBack"].style.visibility="hidden";
        }
        else
        {
            document.all["btnBack"].style.visibility="visible";
        }
    }
    else if (is.nn)
    {
        document.layers["outer"].document[chapter].visibility="visible";
        if (currentChapter==chapterCount)
        {
            document.layers["lbtnNext"].visibility="hidden";
        }
        else
        {
            document.layers["lbtnNext"].visibility="visible";
        }

        if (currentChapter==1)
        {
             document.layers["lbtnBack"].visibility="hidden";
        }
        else
        {
            document.layers["lbtnBack"].visibility="visible";
        }
    }
    return false;
}