// JScript File
        var state = 'none';
        
        function showhide(layer_ref) {
            if (state == 'block') {
                state = 'none';
            } else {
                state = 'block';
            }
            
            if (document.all) { //IS IE 4 or 5 (or 6 beta)
                eval( "document.all." + layer_ref + ".style.display = state");
            }
            
            if (document.layers) { //IS NETSCAPE 4 or below
                document.layers[layer_ref].display = state;
            }
            
            if (document.getElementById &&!document.all) {
                hza = document.getElementById(layer_ref);
                hza.style.display = state;
            }
        }