//validace formularu

function validate_form_denni_menu(form) {
    var f = document.getElementById(form);
    var filter = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;

    if ( f.email.value == '' ) {
        alert('Nezadali jste žádný email.');
    }
    else if (!filter.test(f.email.value)) {
        alert('Zadali jste neplatný e-mail');
    }
    else {
        f.submit();
    }
    return false;
}

function Facebook () {
    document.write ('<iframe src="http://www.facebook.com/plugins/like.php?href=http%3A%2F%2Fwww.facebook.com%2Fpages%2FEspa%C5%88ola%2F133453836727108&amp;layout=standard&amp;show_faces=true&amp;width=250&amp;height=80&amp;action=like&amp;colorscheme=light" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:230px; height:80px;" allowTransparency="true"></iframe>');
}