function ShowHide(layer_open, layer_close) {
        if (layer_open != '') {
            expandLayer(layer_open);
        }
        if (layer_close != '') {
            expandLayer(layer_close);
        }
    }

    function expandLayer(name) {
        var itm = null;

        if (document.getElementById) {
            itm = document.getElementById(name);
        } else if (document.all) {
            itm = document.all[name];
        } else if (document.layers) {
            itm = document.layers[name];
        }

        if (!itm) {
        // Just don't panik, it's ok
        } else if (itm.style) {
            if (itm.style.display == "none") {
                itm.style.display = "";
            } else {
                itm.style.display = "none";
            }
        } else {
            itm.visibility = "show";
        }
    }