var ic = 11;     // Number of alternative images
    var xoxo = new Array(ic);  // Array to hold filenames
        
xoxo[0] = "/graphics/splash.jpg";
xoxo[1] = "/graphics/random/1.jpg";
xoxo[2] = "/graphics/random/2.jpg";
xoxo[3] = "/graphics/random/3.jpg";
xoxo[4] = "/graphics/random/4.jpg";
xoxo[5] = "/graphics/random/5.jpg";
xoxo[6] = "/graphics/random/6.jpg";
xoxo[7] = "/graphics/random/7.jpg";
xoxo[8] = "/graphics/random/8.jpg";
xoxo[9] = "/graphics/random/9.jpg";
xoxo[10] ="/graphics/random/10.jpg";

function pickRandom(range) {
if (Math.random)
return Math.round(Math.random() * (range-1));
else {
var now = new Date();
return (now.getTime() / 1000) % range;
}
}
// Write out an IMG tag, using a randomly-chosen image name.
var choice = pickRandom(ic);

function getAbsoluteDivs()
{
    var arr = new Array();
    var all_divs = document.body.getElementsByTagName("DIV");
    var j = 0;

    for (i = 0; i < all_divs.length; i++)
        if (all_divs.item(i).style.position=='absolute')
        {
            arr[j] = all_divs.item(i);
            j++;
        }

    return arr;
}

function bringToFront(id)
{
    if (!document.getElementById ||
        !document.getElementsByTagName)
        return;

    var obj = document.getElementById(id);
    var divs = getAbsoluteDivs();
    var max_index = 0;
    var cur_index;

    // Compute the maximal z-index of
    // other absolute-positioned divs
    for (i = 0; i < divs.length; i++)
    {
        var item = divs[i];
        if (item == obj ||
            item.style.zIndex == '')
            continue;

        cur_index = parseInt(item.style.zIndex);
        if (max_index < cur_index)
        {
            max_index = cur_index;
        }
    }

    obj.style.zIndex = max_index + 1;
}

function sendToBack(id)
{
    if (!document.getElementById ||
        !document.getElementsByTagName)
        return;

    var obj = document.getElementById(id);
    var divs = getAbsoluteDivs();
    var min_index = 999999;
    var cur_index;

    if (divs.length < 2)
        return;

    // Compute the minimal z-index of
    // other absolute-positioned divs
    for (i = 0; i < divs.length; i++)
    {
        var item = divs[i];
        if (item == obj)
            continue;

        if (item.style.zIndex == '')
        {
            min_index = 0;
            break;
        }

        cur_index = parseInt(item.style.zIndex);
        if (min_index > cur_index)
        {
            min_index = cur_index;
        }

    }

    if (min_index > parseInt(obj.style.zIndex))
    {
        return;
    }

    obj.style.zIndex = 1;

    if (min_index > 1)
        return;

    var add = min_index == 0 ? 2 : 1;

    for (i = 0; i < divs.length; i++)
    {
        var item = divs[i];
        if (item == obj)
            continue;

        item.style.zIndex += add;
    }
}