感觉script没起到作用，下拉列表不出来，求救大神
<html>
<head>
<title>bing search</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
body{background-color:#333;}
.bg-div{background-image: url(river.jpg);width:1228px;height:690px;margin:0 auto;position:relative;}
.logo{background-image: url(logo.png);width:107px;height:53px;float:left;margin:-4px 18px 0 0;}
form{float:left;background-color:#fff;padding:5px}
.search-input-text{border:0;float:left;height:25px;line-height:25px;outline:none;width:350px;}
.search-input-button{border:0;background-image: url(search-button.png);width:29px;height:29px;float:left;cursor:pointer;}
.search-box{position:absolute;top:200px;left:300px;}
.suggest{width:388px;background-color:#fff;brder: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;}
.suggest ul li:hover{text-decoration:underline;background-color:#e5e5e5}
</style>
<script>
var getDOM = function(id){
return document.getElementById(id);
}
var addEvent = function(id,Event,fn){
var el = getDOM(id)||document;
if(el.addEventListener){
el.addEventListener(Event,fn,false);
}
else if(el.attachEvent){
el.attachEvent('on'+Event,fn);
}
}
var getElementLeft = function(element){
var actualLeft = element.offsetLeft;
var current = element.offsetParent;
while(current !== null){
actualLeft += current.offsetLeft;
current = current.offsetParent;
}
return actualLeft;
}
var getElementTop = function(element){
var actualTop = element.offsetTop;
var current = element.offsetParent;
while(current !== null){
actualTop += current.offsetTop;
current = current.offsetParent;
}
return actualTop;
}
addEvent('search_input','keyup',function(){
gteDOM('search-suggest').style.display = 'block';
getDOM('search-suggest').style.position = 'absolute';
getDOM('search-suggest').style.top = getElementTop(getDOM('search-form'))+38+'px';
getDOM('search-suggest').style.left = getElementLeft(getDOM('search-form'))+'px';
});
</script>
</head>
<body>
<div class="bg-div">
<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" class="search-input-text" name="q" id="search_input" autocomplete="off"/>
<input type="submit" class="search-input-button" value=""/>
</form>
</div>
</div>
<div class="suggest" id="search-suggest" style="display:none;">
<ul id="search-result">
<li>搜索结果1</li>
<li>搜索结果2</li>
</ul>
</div>
</body>
</html>
