运用XMLHttpRequest 实现移动鼠标出现不同的登录界面

使用XMLHttpRequest 实现移动鼠标出现不同的登录界面
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>鼠标移动</title>
<script>
var xmlHttp;
function over(){
       xmlHttp=new XMLHttpRequest();
       xmlHttp.open("GET","test2.jsp",true);
       xmlHttp.send(null);
       xmlHttp.onreadystatechange=stateChanged;
}
function over1(){
    xmlHttp=new XMLHttpRequest();
    xmlHttp.open("GET","test6.jsp",true);
    xmlHttp.send(null);
    xmlHttp.onreadystatechange=stateChanged;
}
function stateChanged(){
	   if(xmlHttp.readyState==4){
          document.getElementById("id2").innerHTML
          =xmlHttp.responseText;
	   }
}
</script>
</head>
<body>
<table border="1">
<tr><td>
<h1 onmouseover="over()">用户登录</h1>
</td><td>
<h1 onmouseover="over1()">管理员登录</h1>
</td>
</tr>
<tr><td  colspan="2">
<div id="id2">
用户名:<input type="text" size="20"/>
<br>
密码:&nbsp;&nbsp;&nbsp;
<input type="password" size="21"/>
</div>
</td></tr>
</table>
</body>
</html>