请问，下面这段代码，我怎么看？有没有老师细细的带我解释一下啊？非常感谢带我分析解释！名流千古！

<include file='public:header'/>
<header class="top-fixed bg-yellow bg-inverse">
<div class="top-back">
<a class="top-addr" href="<{:U('index/index')}>"><i class="icon-angle-left"></i></a>
</div>
<div class="top-title">
提示信息
</div>
</header>
<div class="container">
<div class="blank-100"></div>
<if condition="$message neq null" >
<div class="alert alert-red">
<strong>操作成功</strong><p><php>echo($message);</php><span class="text-dot" id="wait-time"></span>秒后自动跳转。</p>
<a class="button bg" href="<{:U('index/index')}>">返回首页</a>
<a class="button bg-green" href="<{$jumpUrl}>">知道啦~</a>



</div>
<else/>
<div class="alert alert-green">
<strong>操作失败</strong><p><php>echo($error);</php> <span class="text-dot" id="wait-time"></span>秒后自动跳转。</p>
<a class="button bg" href="<{:U('index/index')}>">返回首页</a>
<a class="button bg-red" href="<{$jumpUrl}>">知道啦~</a>
</div>
</if>
<div class="blank-40"></div>
</div>
<script>
var secs = 3; //倒计时的秒数
var URL ;
function Load(url){
URL =url;
for(var i=secs;i>=0;i--){
window.setTimeout('timeUpdate(' + i + ')', (secs-i) * 1000);
}
}
function timeUpdate(num){
$("#wait-time").html(num);
if(num == 0){
window.location=URL;
}
}
Load("<?php echo($jumpUrl); ?>"); //要跳转到的页面
</script>
<include file="public:footer"/>