function message_dialog(title, msg) {
    var dlg_el = document.createElement('div');
    dlg_el.setAttribute('id','msg_dlg');
    if(title){
        var ttl = document.createElement('h2');
        ttl.appendChild(document.createTextNode(title));
        dlg_el.appendChild(ttl);
    }
    if(msg){
        var mm = document.createElement('p');
        mm.appendChild(document.createTextNode(msg));
        dlg_el.appendChild(mm);
    }
    $('body').get()[0].appendChild(dlg_el);
    $('#msg_dlg').overlay({
        top: '10%',
        load: true,
        onLoad: function(e) {
            setTimeout(function() {
                $('#msg_dlg').data('overlay').close();
            }, 2000);
        }
    });

};