html代码|死链接自动跳转首页（html自动跳转指定链接代码）

<script language="javascript" type="text/javascript">
        function Jump(Num) {
            Num--;
            document.getElementById("sp_Number").innerHTML = Num;
            if (Num <= 0) {
                window.location.href="网站首页的网址";
            } else {
                timer = setTimeout("Jump(" + Num + ")", 1000);
            }

        }
        window.onload = function myfunction() {
            Jump(5);
        }
    </script>
 <div style="padding-right:0px;padding-left:0px;padding-bottom:200px;margin:0px auto;width:620px;line-height:100px;padding-top:200px;">
 <h1>非常抱歉，您访问的页面不存在。</h1>
 请等待 <span id="sp_Number" style="font-size:75px;font-family:Arial Black;">N</span> 秒后跳转到网站首页...</div>