function startUp()
{
    loadImages();
    homepageLink();
    showImage("Images/" + _images[0]);
}

function loadImages()
{
	var thumbnailStrip = getElement("thumbnailStrip");
	for(var x = 0; x < _images.length; x++)
	{
		var fileName = _images[x];

		var div = createDivElement("", thumbnailStrip, "<img src=\"Thumbnails/" + fileName + "\" onclick=\"showImage('Images/" + fileName + "')\"/>");
        div.className = "thumbnail";

	}
}

function homepageLink()
{
	var url = "";
	
	if(url.length > 0)
	{
		//A homepage url is supplied, so show the link
		var homepageLink = document.getElementById("homepageLink");
		homepageLink.style.display = "";
	}
}

function showImage(url)
{
    var largeImage = document.getElementById("largeImage");
    largeImage.src = url;
}

function getElement(id)
{
    if(id.length > 0)
    {
        return document.getElementById(id);
    }
    else
    {
        return null;
    }
}

function createDivElement(id, parent, innerHtml)
{
    var element = getElement(id);
    if(element == null)
    {
        element = document.createElement("div");

        if(id.length > 0)
        {
            element.id = id;
        }

        if(innerHtml.length > 0)
        {
            element.innerHTML = innerHtml;
        }

        parent.appendChild(element);
    }
    else
    {
        element.innerHTML = innerHtml;
    }

    return element;
}