function preloadImages() { //v3.0
    var d = document;
    if (d.images) {
        if (!d.MM_p)
            d.MM_p = new Array();
        var i, j = d.MM_p.length, a = d.images;
        for (i = 0; i < a.length; i++) {
            d.MM_p[j] = new Image;
            d.MM_p[j++].src = a[i].src;
        }
    }
}
function gofocus() {
    document.getElementById('Newsletter_0').value="Zapisz się na newsletter"
    document.getElementById('Newsletter_0').focus();
    document.getElementById('Newsletter_0').select();
}