为什么没效果？？？ 求解
<!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>
<script src="jquery-1.6.4.min.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jquery应用</title>
</head>
<script type="text/javascript">
var i=1;
$(document).ready(function(e) {
$("#a").click(function(){
if(i%2==0)
{
$("#c").show(200);
}
else
{
$("#c").hide(200);
}
i++;
});
});
</script>
<style>
.al{
width:40px;
height:40px;
float:left;
}
.c1{
list-style-type:none;
width:150px;
margin-left:20px;
}
</style>
<body>
<div align="center">
<div id="#a" class="a1">+</div>
<div id="#c" class="c1">
<li>c</li>
<li>java</li>
<li>jquery</li>
<li>css</li>
<li>api</li>
</div>
</div>
</body>
</html>
猎灰1回答
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Html/CSS
JQuery