function showPreview(obj)
{
    var myImage = new Image();
    myImage = obj;
    document.getElementById("imageLayer").style.display = "block";
    document.getElementById("imagePreview").style.display = "block";
    document.getElementById("myImage").src = myImage.src;
    //setInterval(showPreview, 20);
}

function hidePreview()
{
    document.getElementById("imageLayer").style.display = "none";
    document.getElementById("imagePreview").style.display = "none";
    //setTimeout(showPreview, 20);
}