function add_phs()
{
    add_ph('s', 'Szukaj');
    add_ph('newsletter-input', 'Wpisz adres e-mail');
}

function add_ph(id, phtext)
{
    var phi = document.getElementById(id);
    if (phi)
    {
        if (phi.value == '')
            phi.value = phtext;
        phi.onclick = function ()
        {
            if (phi.value==phtext)
                phi.value = '';
        }
        phi.onblur = function ()
        {
            if (phi.value=='')
                phi.value = phtext;
        }
    }
}