<a><script type="text/javascript">document.write(10)</script>秒钟后将返回首页</a>

                     <script type="text/javascript"> 

        function jump()

        {

            location.href="/visitors";

        }    

        var s=0;    

        function show()

        {

            s=s+1;

            if (s>10) return;

            o=document.getElementById('second');

            o.innerHTML=(10-s)+'秒钟后将会跳转到首页';

        }   

        setTimeout('jump()',10*1000);

        setInterval('show()',1000);

    </script>

<a id="second">10秒钟后将返回首页</a>

<script type="text/javascript">

    var a=document.getElementById("second");

    var i=10;

    setInterval(function(){

        i--;

        if(i<1){

            location.href="/visitors";

        }else{

            a.innerHTML=i+"秒钟后将返回首页";

        }

    },1000);

</script>