<span id="totalSecond">3</span>秒后自動返回

<script language="javascript" type="text/javascript">
<!--
var second = document.getElementById('totalSecond').textContent;
if (navigator.appName.indexOf("Explorer") > -1) //判斷是IE瀏覽器還是Firefox瀏覽器，采用相應措施取得秒數
{
second = document.getElementById('totalSecond').innerText;
} else
{
second = document.getElementById('totalSecond').textContent;
}
setInterval("redirect()", 1000); //每1秒鐘調用redirect()方法一次
function redirect()
{
if (second < 0)
{
location.;
} else
{
if (navigator.appName.indexOf("Explorer") > -1)
{
document.getElementById('totalSecond').innerText = second--;
} else
{
document.getElementById('totalSecond').textContent = second--;
}
}
}
-->
</script>