function registerNL()
{
    rnl = document.getElementById("nlemail");
    
    if (rnl.value != '')
    {        
        slidedown('nlthnx');
        getDataForDIV('../engine/modules/add_nl.php?email='+rnl.value, 'nld'); 
        rnl.value = '';
        setTimeout("slideup('nlthnx')", 3500);
    }
    else
    {
        alert('Email nebol zadaný!');
    }
}