function init()
{
    currentThumbnail = document.getElementById("thumbnails").getElementsByTagName("li")[0];
}



function changePicture(newPictureURL, img)
{
    //alert(newPictureURL);
    document.getElementById("large_image").src = newPictureURL;
    //img.parentNode.
    currentThumbnail.className = '';
    img.parentNode.className   = 'selected';
    currentThumbnail           = img.parentNode;
}