function isValidEmailAddress(emailAddress) {
    var pattern = new RegExp(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/i);
    return pattern.test(emailAddress);
}


$(document).ready(function() {


    $('#kalkulator form').submit(function() {
      calculateGutschein();
      return false;
    });


    var $dialog = $('<div></div>')
        .html('<form method="post" action="http://www.kaito-afrika.de/de/kaito-downloads.html"><p>Bitte geben Sie Ihre Emailadresse an:</p><p><input type="text" id="validate" name="validate" width="30"><span id="validEmail"></span></p><p><input id="senden" style="display:none;" type="submit" name="senden" value="Senden"></p></form>')
        .dialog({
            autoOpen: false,
            title: 'Zugang zum Kaito-Downloadbereich'
        });
        
    $('.level2').hide();
    $('a.navi_active2').parent().find('ul.level2').show();
    $('.content4').parent().css('background-color', '#f4f4f4');
    $('.example1').click(function() {
        $dialog.dialog('open');
    });

    $('#validate').keyup(function() {
        var email = $("#validate").val();
        if(email != 0) {
            if(isValidEmailAddress(email)) {
                $("#validEmail").css({ "background-image": "url('http://www.kaito-afrika.de/cms/upload/site/validyes.png')" });
                $("#senden").css({ "display": "inline-block" });
            } else {
                $("#validEmail").css({ "background-image": "url('http://www.kaito-afrika.de/cms/upload/site/validno.png')" });
                $("#senden").css({ "display": "none" });
            }
        } else {
            $("#validEmail").css({ "background-image": "none" });
            $("#senden").css({ "display": "none" });
        };
    });


});