var second = document.getElementById('totalSecond').textContent;

    if (navigator.appName.indexOf("Explorer") > -1)  //判断是IE浏览器还是Firefox浏览器，采用相应措施取得秒数

    {

        second = document.getElementById('totalSecond').innerText;

    } else

    {

        second = document.getElementById('totalSecond').textContent;

    }

    setInterval("redirect()", 1000);  //每1秒钟调用redirect()方法一次

    function redirect()

    {

        if (second < 0)

        {

            location.href="/";

        } else

        {

            if (navigator.appName.indexOf("Explorer") > -1)

            {

                document.getElementById('totalSecond').innerText = second--;

            } else

            {

                document.getElementById('totalSecond').textContent = second--;

            }

        }

    }