function showhide( id, closeicon, openicon )
{
    if ( document.getElementById )
    {
        image_object     = document.getElementById( 'show_hide_icon_' + id );
        attribute_object = document.getElementById( 'attributes_' + id );
        if ( attribute_object.style.display == "none" )
        {
            attribute_object.style.display = "";
            image_object.src = closeicon;
        }
        else
        {
            attribute_object.style.display = "none";
            image_object.src = openicon;
        }
    }
}