$(document).ready(function ()
{
    //pro firefox odkliknuti enteru pro prihlaseni
    $(".jquery_kontakt_textbox").keypress(function (e)
    {
        code = e.keyCode ? e.keyCode : e.which;
        if (code.toString() == 13)
        {
            var fnc = eval($(".jquery_kontakt_button").attr("href"));
        }
    });
});