Scroll a web content slider

I have a web content slider and i want it to scroll htm pages that are slided this my code


<html>
 <head>
   <title>SiteShow 1.0</title>
   <meta http-equiv="content-type" content="text/html; charset=windows-1250">
   <style>
    /* Change body background-color to change fade out color. */
    /*body.siteshow { margin:0; padding:0; background-color:#000000;}*/
    #menu
    {
    font-family:Arial;
    font-size:9pt;
    display:none;
    opacity:0.00;
    -mozopacity:0.00;
    filter:alpha(opacity=0);
    position:absolute;
    top:10px;
    left:10px;
    padding:5px;
    background-color:#000000;
    color:#FFFFFF;
    border:3px dotted #999999;
    }
    #menu a { color:#ffffff; }
    #menu a:hover { text-decoration:none; }
    #title { font-size:11pt; font-weight:bold; letter-spacing:2; }
    #slides { font-size:9pt; line-height:16pt; }
    .button { width:60px; font-size:9pt; letter-spacing:1; }
    #bottom {
    border: 1px solid red;
}
   </style>

   <script type="text/javascript">
    var current_idx = 0;
    var slides = new Array();
    var menuwin;
    var show_timer;
    var menu_timer;
    var menu;
    var content;
    var loaded = true;
    // Define your "slides". 3 values for each are:
    // 1. Duration in seconds.
    // 2. Title to be used in menu.
    // 3. Source URL. Can be full URI or a relative URL.
    slides[1] = new Array(15, "Hespress", "http://www.hespress.com");
    slides[2] = new Array(15, "Hihi2", "http://www.hihi2.com");
    slides[3] = new Array(15, "Realitylapse", "http://www.realitylapse.com");
    slides[4] = new Array(15, "kooora", "http://www.kooora.com");
    slides[5] = new Array(60, "EU-MAJOR", "https://na10.salesforce.com/500?fcf=00BA0000004UFjT");
    ScrollRate = 100;

function scrollDiv_init() {
    DivElmnt = document.getElementById('slides');
    ReachedMaxScroll = false;

    DivElmnt.scrollTop = 0;
    PreviousScrollTop  = 0;

    ScrollInterval = setInterval('scrollDiv()', ScrollRate);
}

function scrollDiv() {

    if (!ReachedMaxScroll) {
        DivElmnt.scrollTop = PreviousScrollTop;
        PreviousScrollTop++;

        ReachedMaxScroll = DivElmnt.scrollTop >= (DivElmnt.scrollHeight - DivElmnt.offsetHeight);
    }
    else {
        ReachedMaxScroll = (DivElmnt.scrollTop == 0)?false:true;

        DivElmnt.scrollTop = PreviousScrollTop;
        PreviousScrollTop--;
    }
}

function pauseDiv() {
    clearInterval(ScrollInterval);
}

function resumeDiv() {
    PreviousScrollTop = DivElmnt.scrollTop;
    ScrollInterval    = setInterval('scrollDiv()', ScrollRate);
}


    function MenuInit()
    {
    var html = "";
    for(idx=1; idx<slides.length; idx++) {
    html += '<a href="javascript:Navigate('+idx+')">' +
    slides[idx][1] + "</a><br />\
";
    }
    document.getElementById("slides").innerHTML = html;

    menu.style.display = "block";
    }
    function MenuShow()
    {
    clearTimeout(menu_timer);
    opacity('menu', 0, 90, 500);
    menu_timer = setTimeout("MenuHide()", 3500);
    }
    function MenuHide()
    {
    opacity('menu', 90, 0, 500);
    }
    function Pause()
    {
    clearTimeout(show_timer);
    document.getElementById('play').style.display = "block";
    document.getElementById('pause').style.display = "none";
    }
    function Navigate(slide_idx)
    {
    clearTimeout(show_timer);
    if (current_idx == 0) {
    if (!slide_idx) { slide_idx = 1; }
    current_idx = slide_idx;
    content.src = slides[current_idx][2];
    document.getElementById('play').style.display = "none";
    document.getElementById('pause').style.display = "block";
    show_timer = setTimeout("Navigate()", slides[current_idx][0]*1000);
    return;
    }
    if (slide_idx) {
    current_idx = slide_idx;
    content.src = slides[current_idx][2];
    document.getElementById('play').style.display = "block";
    document.getElementById('pause').style.display = "none";
    return;
    }
    loaded = false;
    current_idx++;
    if ( current_idx == slides.length) { current_idx = 1; }
    opacity('content', 100, 0, 500);
    document.getElementById('play').style.display = "none";
    document.getElementById('pause').style.display = "block";
    show_timer = setTimeout("Navigate()", slides[current_idx][0]*1000);
    return;
    }
    function opacity(id, opacStart, opacEnd, millisec)
    {
    //speed for each frame
    var speed = Math.round(millisec / 100);
    var timer = 0;
    //determine the direction for the blending, if start and end are the same nothing happens
    if(opacStart > opacEnd) {
    for(i = opacStart; i >= opacEnd; i--) {
    setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
    timer++;
    }
    if (opacEnd == 0) { setTimeout("FadeOutTrigger('"+id+"')",((timer-1) * speed));; }
    //if (opacEnd == 0) { FadeOutTrigger(id); }
    } else if(opacStart < opacEnd) {
    if (opacStart == 0) { FadeInTrigger(id); }
    for(i = opacStart; i <= opacEnd; i++)
    {
    setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
    timer++;
    }
    }
    }
    //change the opacity for different browsers
    function changeOpac(opacity, id)
    {
    var object = document.getElementById(id).style;
    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
    object.filter = "alpha(opacity=" + opacity + ")";
    }
    function FadeOutTrigger(id)
    {
    //alert('FadeOut: '+id);
    switch(id) {
    case "menu":
    document.getElementById(id).style.display = "none";
    break;
    case "content":
    content.src = slides[current_idx][2];
    //setTimeout("opacity('content', 0, 100, 500)", 1000);
    break;
    case "element":
    var ele = document.getElementById(element);
    window.scrollTo(ele.offsetLeft,ele.offsetTop);
    default:
    break;
    }
    }
    function FadeInTrigger(id)
    {
    //alert('FadeIn: '+id);
    switch(id) {
    case "menu":
    document.getElementById(id).style.display = "block";
    break;
    case "content":
    //opacity('content', 0, 100, 500);
    break;
    default:
    break;
    }
    }
    function FadeInContent()
    {
    if (!loaded) {
    opacity('content', 0, 100, 500);
    loaded = true;
    }
    }
    function LoadTrigger()
    {
    //self.resizeTo(1366,768);
    menu = document.getElementById('menu');
    content = document.getElementById('content');

    Navigate();
    MenuInit();
    MenuShow();

    }
    window.onload = LoadTrigger;







   </script>

 </head>

 <body class="siteshow" >
    <iframe id="content" name="content" style="width:100%; height:100%;" frameborder="no" scrolling="auto" src="" onmouseover="MenuShow();" onload="FadeInContent();" ></iframe>
    <div id="menu">
    <div id="title">SiteShow Menu</div>
    <div id="slides" onLoad="scrollDiv_init()" onMouseOver="pauseDiv()" onMouseOut="resumeDiv()">
    </div>
    <p>
    <input id="pause" class="button" style="display:block;" type="button" value="pause" onclick="Pause()" />
    <input id="play" class="button" style="display:none;" type="button" value="play" onclick="Navigate()" />
    </p>
    </div>

 </body>
</html>

It slides perfectly but it doesn’t scroll automaticaly the pages i added a function to do it and it didn’t work
Please if anyone has any idea help me!!