function toggle_element(elm_id)
{

    elm = document.getElementById(elm_id);
    if (elm.style.display == 'none') {
    
        elm.style.display = 'block';
        elm.style.visibility = 'visible';
    } else {
    
        elm.style.display = 'none';
        elm.style.visibility = 'hidden';
    }
}

function is_visible(elm_id)
{

    elm = document.getElementById(elm_id);
    if (elm.style.display == 'none') {
    
        
        return false;
    }
    
    return true;
}

function toggle_text(textid)
{

    document.getElementById('text-' + textid).innerHTML += document.getElementById('long-' + textid).innerHTML;
    toggle_element('toggler-' + textid);
}