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);
}

/*FORM validation and div changing*/
$(document).ready(function() {
    $().click(function (ev) {
        var $target = $(ev.target);
        if (!$target.is("input")) {
            $("input#email").val('Bitte geben Sie Ihre E-Mail-Adresse hier, um Nachrichten zu erhalten');
        }
    });

    $("#email").click(function() {
        $("input#email").val('');
    });

    $("#submit").click(function() {
        var email = $("input#email").val();
        if (!isValidEmailAddress(email)) {
            $("input#email").focus();
            $("input#email").val('Enter a valid e-mail');
            return false;
        }
    });

    /*form submit*/
    $("form#form-email").submit(function() {
        var email = $("input#email").val();
        $.ajax({
            url:'mail.php',
            type:'post',
            data: "email=" + email,
            success: function(msg) {
                if (msg == 1)
                    $("input#email").val('Vielen Dank, Ihre E-Mail war erhalten!');
                else
                    $("input#email").val('Einige Probleme beim Senden?');
            }
        });
        return false;
    });
    /*end formsubmit*/
});