function $(o) {
    return document.getElementById(o);
};
function showElement(o,d) {
    $(o).style.display = (d) ? 'block':'none';
}
function fillSubject(s) {
    $('ctl00_ctl00_ContentPlaceHolder1_ContentPlaceHolder2_cSubject').value = s;
    showElement('subjects',false);
}