/**
 *
 * @access public
 * @return void
 **/
function switchEntry(id, switch_element) {
    var div = $(id);
    if (div.className=="closed") {
        div.className = "open";
    } else {
        div.className = "closed";
    }

    if (switch_element != "" && (switch_element.style.backgroundImage == "" || switch_element.style.backgroundImage == "url(\"/templates/default/img/subpage/course_close.png\")")) {
        switch_element.style.backgroundImage = "url(\"/templates/default/img/subpage/course_open.png\")";
    } else {
        switch_element.style.backgroundImage = "url(\"/templates/default/img/subpage/course_close.png\")";
    }
}