function test() {
    alert('hello');
}

function toggle_visibility(id, image_path) {    
    var e = document.getElementById(id);
    var image_id = id + "_image";
    var image = document.getElementById(image_id);    

    if (e.style.display == 'block') {
        e.style.display = 'none';
        image.src = image_path + 'images/orange_down.gif';
    }
    else {
        e.style.display = 'block';
        image.src = image_path + 'images/orange_up.gif';
    }
}