function hightLightTheKeyWord(searchParam,$dom){

        if(searchParam&&!/^\s*$/.test(searchParam)){

            searchParam=regTrim(searchParam);

            var contents=$dom.html();

            var pattern=new RegExp('('+searchParam+')(?=[^<>]*<)','gim');

            contents=contents.replace(pattern,"<span style='color:blue'>$1</span>");

            $dom.html(contents);

        }

    }

    function regTrim(s){

        var imp=/[\^\.\\\|\(\)\*\+\-\$\[\]\?]/g;

        var imp_c={

                "^":"\\^",

                ".":"\\.",

                "\\":"\\\\",

                "|":"\\|",

                "(":"\\(",

                ")":"\\)",

                "*":"\\*",

                "+":"\\+",

                "-":"\\-)",

                "$":"\\$)",

                "[":"\\[)",

                "]":"\\])",

                "?":"\\?"

        };

        s.replace(imp,function(o){

            return imp_c[o];

        });

        return s;

    }