Escaping special character

    <script id="allScripts">
    $(document).ready(function() { // Execute when the DOM is fully loaded.
        // add a shortcut method/function
        (function( $ ) {
            // @search: a string used to as search and replace
            // @tag: tag to create wrapping element
            $.fn.wrapHanzi = function(search, tag, replace) {
                return this.each(function() {
                    regex = new RegExp(search, 'g'); // create a regex on the fly, See: http://is.gd/BfR9gR
@@                    if (!replace) { replace = search; }
                    wrap = '<'+tag+'>'+replace+'</'+tag+'>';

                    $(this).replaceText( regex, wrap);
                });
            };
        })( jQuery );

        $("#text").wrapHanzi('水', 'easy');
        $("span").wrapHanzi('韓', 'unknow');
        $("span").wrapHanzi('國', 'partial');
        $("span").wrapHanzi('有', 'easy');
@@        $("span").wrapHanzi('\\[', 'easy', '['); # 3 parameters
        $("span").wrapHanzi('\\]', 'easy', ']');
    });
    </script>