(function(){
                var week = '日一二三四五六';
                var innerHtml = '{0}:{1}:{2}';
                var dateHtml = "{0}月{1}日  周{2}";
                var timer = 0;
                var beijingTimeZone = 8;
                    
                function format(str, json){
                    return str.replace(/{(\d)}/g, function(a, key) {
                        return json[key];
                    });
                }
                    
                function p(s) {
                    return s < 10 ? '0' + s : s;
                }
                    
                window.baidu_time =     function(time){    
                    initTime = time;
                    show(time);
                    timer = setInterval(function(){
                        time += 1000;
                        show(time);
                    }, 1000);
                        
                }
                    
                function show(time){
                    var timeOffset = ((-1 * (new Date()).getTimezoneOffset()) - (beijingTimeZone * 60)) * 60000;
                    var now = new Date(time - timeOffset);
                    document.getElementById('time').innerHTML = format(innerHtml, [p(now.getHours()), p(now.getMinutes()), p(now.getSeconds())]);
                    setClockTime(time);
                    document.getElementById('date').innerHTML = format(dateHtml, [ p((now.getMonth()+1)), p(now.getDate()), week.charAt(now.getDay())]);
                }
            
                function init(){
                    var elm = document.createElement('SCRIPT');
                    elm.src = 'http://open.baidu.com/app?module=beijingtime&t=' + new Date().getTime();
                    document.getElementsByTagName('HEAD')[0].appendChild(elm);
                    setTimeout(function(){init()}, 60000);
                }
                    
                window.baidu_time(bjtime);
                    
                })();

------解决方案--------------------
Http Status Code是304 Not Modified，不知道是什么意思