$(function() {
   
    // Adds required * to all required form elements
    $('.required').not('span').each(function () {
        $('label[for = '+this.id+']').not('.radio').append('<span class="required">*</span>');
    });
});

    // Reloads captcha image
    function reloadCaptcha(imageId) {
        var src = document.getElementById(imageId).src;
        document.getElementById(imageId).src = src.split('?')[0] + '?' + (new Date()).getTime();
}