function slideSwitch() {
    var $active = $('#slideshow IMG.active');

    if ($active.length == 0) $active = $('#slideshow IMG:last');

    // use this to pull the images in the order they appear in the markup
    var $next = $active.next().length ? $active.next()
            : $('#slideshow IMG:first');

    // uncomment the 3 lines below to pull the images in random order

    // var $sibs  = $active.siblings();
    // var rndNum = Math.floor(Math.random() * $sibs.length );
    // var $next  = $( $sibs[ rndNum ] );


    $active.addClass('last-active');

    $next.css({ opacity: 0.0 })
            .addClass('active')
            .animate({ opacity: 1.0 }, 1000, function () {
                $active.removeClass('active last-active');
            });
}

$(function () {
    setInterval("slideSwitch()", 5000);
});

function checkEmail(adr) {
    var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
    if (!filter.test(adr)) {
        return false;
    }
    return true
}

function signnews() {

    var adr = document.getElementById('mailing_email').value;

    if (adr == "") {
        alert('Molimo Vas da unesete ispravnu E-mail adresu. Hvala.'); return;
    }

    if (checkEmail(adr)) {
        var toSend = adr
        $.ajax({
            url: 'engines/mailingList.asp',
            type: 'POST',
            data: toSend,
            dataType: 'text/html',
            cache: false,
            error: function (data) {
                alert(data.responseText)
                alert('Molimo vas pokušajte ponovo!');
            },
            success: function (data) {
                if (data == 'uspesno') {
                    alert("Uspešno ste se prijavili na naš newsletter!");
                    document.getElementById('mailing_email').value = "";
                } else
                    alert("Molimo Vas da unesete ispravnu E-mail adresu. Hvala.!");
            }
        });
    } else {
        alert('Molimo Vas da unesete ispravnu E-mail adresu. Hvala.');
    }
}