var images = new Array();
images[0] = "images/swap01.jpg";
images[1] = "images/swap02.jpg";
images[2] = "images/swap03.jpg";
images[3] = "images/swap04.jpg";
images[4] = "images/swap05.jpg";

function loadImages(imgArr)
{
    var loadCount = 0;

    if (imgArr.length == 0)
    {
        alert("Empty image array passed into function loadImages");
    }

    for (var i = 0; i < imgArr.length; i++)
    {
        loadCount++;
        newimg = new Image();
        newimg.src = imgArr[i];
    }

    setTimeout("displayRanImage()", 2500);

    return loadCount;
}

var loaded = loadImages(images);

function displayRanImage()
{
    var thisImg = images[parseInt((Math.random() * 5))];
    document.images["homeimage"].src = thisImg;
    setTimeout("displayRanImage()", 2500);
}