function menu(rozwin, link)
{
    if(document.getElementById(rozwin).style.display == 'block')
    {
        document.getElementById(rozwin).style.display = 'none';
        document.getElementById(link).className = null;
    }
    else
    {
        document.getElementById(rozwin).style.display = 'block';
        document.getElementById(link).className = 'selected';
    }
}

function blokada()
{
    document.mailing.email.value = "";
}

function news(zwin, rozwin)
{
    document.getElementById(zwin).style.display = 'none';
    document.getElementById(rozwin).style.display = 'block';
}