function mtShow(id) {
    var el = (typeof id == "string") ? document.getElementById(id) : id;
    if (el) el.style.display = 'block';
}
function mtSetCommentParentID() {
    var checkbox = document.getElementById('comment-reply');
    var parent_id_field = document.getElementById('comment-parent-id');
    if (!checkbox || !parent_id_field) return;
    var pid = 0;
    if (checkbox.checked == true)
        pid = checkbox.value;
    parent_id_field.value = pid;
}
function mtReplyCommentOnClick(parent_id, author) {
    mtShow('comment-form-reply');
    var checkbox = document.getElementById('comment-reply');
    var label = document.getElementById('comment-reply-label');
    var text = document.getElementById('comment-text');
    // Populate label with new values
    var reply_text = 'Replying to <a href="#comment-'+ parent_id +'" onclick="location.href=this.href; return false">comment from '+ author +'</a>';
    label.innerHTML = reply_text;
    checkbox.value = parent_id; 
    checkbox.checked = true;
    text.focus();
    mtSetCommentParentID();
}