此頁面將<span id='count_down' style='color:red;'>3</span>秒後自動轉頁，如不能自動轉頁請點擊此連結： <a id='go_link'  href='https://youtu.be/E3bhqr73sFw' target='_blank'>https://youtu.be/E3bhqr73sFw</a><script type='text/javascript' language='Javascript'>
                     var timeleft = 0;                             
                     var timeLabel = document.getElementById('count_down');
                    var downloadTimer = setInterval(function(){
                        if(timeleft <= 1){
                            clearInterval(downloadTimer);
                        }                                
                        timeLabel.innerHTML = timeleft;
                        timeleft -= 1;                                                                
                    }, 1000);
                    var anchor = document.getElementById('go_link');
                    setTimeout(function(){
                        var event = new MouseEvent('click');
                        anchor.dispatchEvent(event);
                        // history.back();
                    }, timeleft*1000);
            </script>