function hideErrorMsg() {
    $('div_err_msg').innerHTML="";
}

function toggleGenres(val) {
    $('label_genres').style.display=((val)?'':'none');
    $('div_genres').style.display=((val)?'':'none');
    $('div_genres_hr').style.display=((val)?'':'none');

    $('label_country').style.display=((val)?'':'none');
    $('span_country').style.display=((val)?'':'none');
    $('div_country_hr').style.display=((val)?'':'none');

    $('label_tags').style.display=((val)?'':'none');
    $('span_tags').style.display=((val)?'':'none');
    $('div_tags_hr').style.display=((val)?'':'none');

    $('div_kategoriak').style.display=((val)?'':'none');
    $('div_kategoriak_hr').style.display=((val)?'':'none');
}

function handleSearchInCheckboxes() {
    var scrplay=$('ScreenplaysSearchInScreenplays1');
    var reviews=$('ScreenplaysSearchInScreenplays2');
    var infodiv=$('span_search_info');
    var errdiv=$('div_err_msg');
    var str_info='';
    var str_err='';

    toggleGenres(scrplay.checked);
    hideErrorMsg();
    $('span_search_info').show();
    
    //Legalább az egyik checked-e?
    if(!(scrplay.checked || reviews.checked)) {
        str_err+="One of them must be selected!";
    }
    //Screenplay esetén keresés ezekben a mezőkben
    if(scrplay.checked) {
        str_info+='<strong>Screenplays:</strong> title, logline, synopsis';
    }
    //Review esetén keresés ezekben a mezőkben
    if(reviews.checked) {
        str_info+='<strong>Reviews:</strong> title, lead, body';
    }
    if(str_err!="") {
        errdiv.innerHTML=str_err;
        $('div_advanced_submit').hide();
    } else {
        $('div_advanced_submit').show();
    }

    infodiv.innerHTML=str_info;
}

function handleForumCheckboxes() {
    var fields=Array('topics','comments', 'users');
    var isChecked=false;

    for(var i=0;i<fields.length;i++) {
        if($('check_'+fields[i]).checked) {
            isChecked=true;
            break;
        }
    }
    if(!isChecked) {
        $('div_msg').show();
        $('submit_search').hide();
    } else {
        $('div_msg').hide();
        $('submit_search').show();
    }
}