JS: Jquery mailto plugin

jquery.mailto.js

(function($) {
    $.fn.mailto = function() {
        return this.each(function() {
            var $el = $(this),
                emailAdd = $el.attr("href").replace(/\s*\(.+\)\s*/, "@"),
                emailClass = $el.attr('class'),
                emailText = $el.html();
            
            $(this).before('<a href="mailto:' + emailAdd + '" rel="nofollow" class="' + emailClass + '" title="Email ' + email_add + '">' + emailText + '</a>').remove();
        });
    };
})(jQuery);