function ShowCallbackImage(id)
{
    document.getElementById("CurrentItemHiddenField").value = id;
            
    for(var i=0; i<document.getElementsByName("Thumb").length; i++)
    {
        document.getElementsByName("Thumb").item(i).style.display="none";
    }
    if (document.getElementById("img_"+id) != null)
    {
        document.getElementById("img_"+id).style.display="block";
    }
    if (document.getElementById("ChooseItemButton") != null)
    {
        document.getElementById("ChooseItemButton").click();        
    }
}

function ChangeCategory(id)
{
    document.getElementById("CurrentCategoryHiddenField").value = id;
    
    if (document.getElementById("ChooseCategoryButton") != null)
    {
        document.getElementById("ChooseCategoryButton").click();        
    }
}