function ToggleCat (prefix,alt)
{
        if (document.getElementById(prefix  + "_CatTable").style.display == 'none')
        {
                document.getElementById(prefix + "_Cat").src = "../images/Bilder/minus.gif";
                document.getElementById(prefix + "_Cat").alt = alt + " ausblenden";
                document.getElementById(prefix + "_Cat").title = alt + " ausblenden";

                document.getElementById(prefix + "_CatTable").style.display = "";
        }
        else
        {
                document.getElementById(prefix + "_Cat").src = "../images/Bilder/plus.gif";
                document.getElementById(prefix + "_Cat").alt = alt + " einblenden";
                document.getElementById(prefix + "_Cat").title = alt + " einblenden";

                document.getElementById(prefix + "_CatTable").style.display = "none";
        }
}

function swapCat (prefix)
{
        if (document.getElementById(prefix  + "_CatTable").style.display == 'none')
        {
                document.getElementById(prefix + "_CatTable").style.display = "";
                document.getElementById(prefix + "_CatTableIMG").src = "../images/Bilder/swap_bottom.gif";
        }
        else
        {
                document.getElementById(prefix + "_CatTable").style.display = "none";
                document.getElementById(prefix + "_CatTableIMG").src = "../images/Bilder/swap_left.gif";
        }
}