帮忙看看代码，出不来下拉框，调试不好，谢谢
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge" /><!--解决浏览器兼容-->
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>bing search</title>
<style type="text/css">
body{
background-color:#333;
}
.bg{
position:relative;
background-image:url(http://localhost:23688/river.jpg);
width:1228px;
height:690px;
margin:0 auto;
}
.search-form{
float: left;
background-color: #fff;
padding:5px;
}
.search-button{
background-image:url(http://localhost:23688/search-button.png);
width:29px;
height:29px;
float:left;
border:0;
}
.search-text{
width:350px;
height:25px;
line-height:25px;
border:0;
float:left;
outline:none;/*无边框*/
}
.search-box{
position:absolute;
top:150px;
left:200px;
}
.logo{
background-image:url(http://localhost:23688/logo.png);
width:107px;
height:53px;
float:left;
margin:-4px 18px 0 0;
}
.suggest{
width:388px;
background-color:#fff;
border:1px solid #999;
}
.suggest ul{
list-style:none;
margin:0;
padding:0;
}
.suggest ul li{
padding:3px;
font-size:14px;
line-height:25px;
cursor:pointer;/*光标变为手*/
}
/*鼠标滑过*/
.suggest ul li:hover{
text-decoration:underline;
background-color:#e5e5e5;
}
</style>
<script src="http://code.jquery.com/jquery-2.1.1.min.js"></script>
<script type="text/javascript">
$('#search_input').bind('keyup', function () {
$('#search-suggest').show().css({
top: $('#search-form').offset().top+$('#search-form').height,
left: $('#search-form').offset().left,position:'absolute'
});//智能提示框
})
</script>
</head>
<body>
<div class="bg">
<div class="search-box">
<div class="logo"></div>
<form class="search-form" action="https://cn.bing.com/search" target="_blank" id="search-form">
<input type="text" name="q" class="search-text" id="search_input" autocomplete="off" />
<input type="submit" class="search-button" value="" />
</form>
</div>
</div>
<div>
<div class="suggest" id="search-suggest" style="display:none">
<ul>
<li>搜索结果1</li>
<li>搜索结果2</li>
<li>搜索结果3</li>
</ul>
</div>
</div>
</body>
</html>
