求大神看下哪里的问题，我搞了两天了，都没有弄出来
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
*{
padding:0;
margin:0;
}
body{
padding:50px 0;
background-color:#FFF;
font-size:14px;
color:#555;
}
.slider .main .main-i,
.slider .main,
.slider{
width:100%;
height:400px;
position:relative;
}
/*幻灯片区域样式*/
.slider .main{
overflow:hidden;
}
/*每一个幻灯片的样式*/
.slider .main .main-i{}
.slider .main .main-i img{
width:100%;
position:absolute;
left:0;
top:0;
z-index:1;
}
.slider .main .main-i .caption{
position:absolute;
right:50%;
top:30%;
z-index:9;
}
.slider .main .main-i .caption h2{
font-size:40px;
line-height:50px;
color:#B5B5B5;
text-align:right;
}
.slider .main .main-i .caption h3{
font-size:70px;
line-height:70px;
color:#000000;
text-align:right;
font-family:'Open Sans Condensed';
}
/*控制按钮区域样式*/
.slider .ctrl {
width:100%;
height:13px;
line-height:13px;
text-align:center;
position:absolute;
left:0;
bottom:-13px;
}
.slider .ctrl .ctrl-i {
display:inline-block;
width:150px;
height:13px;
background-color:#666;
box-shadow:0 1px 1px rgba(0,0,0,.3);
position:relative;
margin-left:1px;
}
.slider .ctrl .ctrl-i img {
width:100%;
position:absolute;
left:0;
bottom:50px;
z-index:1;
opacity:0;
transition:all .2s;
}
/*hover到控制按钮*/
.slider .ctrl .ctrl-i:hover {
background-color:#f0f0f0;
}
.slider .ctrl .ctrl-i:hover img {
bottom:13px;
-webkit-box-reflect:above 0px
gradient(linear,left top,left bottom,from(transparent),color-stop(50%,transparent),to(rgba(255,255,255,.3)));
opacity:1;
}
/*active 当前展现的状态*/
.slider .ctrl .ctrl-i_active:hover,
.slider .ctrl .ctrl-i_active{
background-color:#000;
}
.slider .ctrl .ctrl-i_active:hover img{
opacity:0;
}
/*幻灯片切换的样式*/
.slider .main .main-i{
opacity:0;
position:absolute;
right:50%;
top:0;
transition:all .5s;
}
.slider .main .main-i h2{
margin-right:45px;
}
.slider .main .main-i h3{
margin-right:-45px;
}
.slider .main .main-i h2,
.slider .main .main-i h3{
transition:all .8s 1s;
}
.slider .main .main-i_active{
right:0;
opacity:1;
}
.slider .main .main-i_active h2,
.slider .main .main-i_active h3{
margin-right:0px;
}
</style>
</head>
<body>
<div class="slider">
<div class="main" id="template_main">
<div class="main-i" id="main_{{index}}">
<div class="caption">
<h2>{{h2}}</h2>
<h3>{{h3}}</h3>
</div>
<img src="../系统/{{index}}.jpg"/>
</div>
</div>
<div class="ctrl" id="template_ctrl">
<a class="ctrl-i" id="ctrl_{{index}}" href="javascript:switchSlider({{index}});"> <img src="../系统/{{index}}.jpg"/></a>
</div>
<script type="text/javascript">
//数据定义，实际生产环境中，后台给出。
var date = [
{ img: 1, h2: 'Creative', h3: 'beatufil' },
{ img: 2, h2: 'Friendly', h3: 'Devil' },
{ img: 3, h2: 'Crazy', h3: 'Friend' },
{ img: 4, h2: 'Creative', h3: 'beatufil' },
{ img: 5, h2: 'Friendly', h3: 'Devil' },
{ img: 6, h2: 'Crazy', h3: 'Friend' },
{ img: 7, h2: 'Crazy', h3: 'Friend' }
]
//通用函数。
var g = function (id) {
if (id.substr(0,1) == '.') {
return document.getElementsByClassName(id.substr(1));
}
return document.getElementById(id);
}
//添加所有的幻灯片，以及对应的按钮。
function addSliders() {
//获取模板。
var tpl_main = g('template_main').innerHTML
.replace(/^\s*/, '').replace(/\s*$/, '');
//按钮的
var tpl_ctrl = g('template_ctrl').innerHTML
.replace(/^\s*/, '').replace(/\s*$/, '');
//定义最终输出的HTML的变量。
var out_main = [];
var out_ctrl = [];
//遍历所有数据，构建最终输出的HTML。
for (i in date) {
var _html_main = tpl_main
.replace(/{{index}}/g, date[i].img)
.replace(/{{h2}}/g, date[i].h2)
.replace(/{{h3}}/g, date[i].h3);
var _html_ctrl = tpl_ctrl
.replace(/{{index}}/g, date[i].img);
out_main.push(_html_main);
out_ctrl.push(_html_ctrl);
}
//把HTML回写到对应的DOM里面
g('template_main').innerHTML = out_main.join('');
g('template_ctrl').innerHTML = out_ctrl.join('');
}
//幻灯片切换
function switchSlider(n) {
//获得要展现的幻灯片及控制按钮
var main = g('main_' + n);
var ctrl = g('ctrl_' + n);
//获得所有的幻灯片以及控制按钮
var clear_main = g('.main-i');
var clear_ctrl = g('.ctrl-i');
//清除他们的active的样式
for (i = 0; i < clear_ctrl.length; i++) {
clear_main[i].className = clear_main[i].className.replace('main-i_active', '');
clear_ctrl[i].className = clear_ctrl[i].className.replace('ctrl-i_active', '');
}
//为当前控制按钮和附加样式。
main.className += 'main-i_active';
ctrl.className += 'ctrl-i_active';
}
//定义何时处理幻灯片输出
window.onload = function () {
addSliders();
switchSlider(1);
}
</script>
</div>
</body>
</html>
