ajax如何能同时读取多个网址的内容在一个html上显示

<!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-Language" content="zh-cn" />
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Ajax</title>
<script type="text/javascript" language="javascript">
var http_request = false;
function send_request(url,viewidin)
{//初始化、指定处理函数、发送请求的函数
var objj=viewidin;
http_request = false;
//开始初始化XMLHttpRequest对象
if(window.XMLHttpRequest) { //Mozilla 浏览器
http_request = new XMLHttpRequest();
if (http_request.overrideMimeType) {//设置MiME类别
http_request.overrideMimeType('text/xml');
}
}
else if (window.ActiveXObject) { // IE浏览器
try {
http_request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
http_request = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
if (!http_request) { // 异常，创建对象实例失败
window.alert("不能创建XMLHttpRequest对象实例.");
return false;
}
http_request.onreadystatechange = processRequest(objj);
// 确定发送请求的方式和URL以及是否同步执行下段代码
http_request.open("GET", url, true);
http_request.send(null);
}
// 处理返回信息的函数
function processRequest(viewid) {
var obj=viewid;
if (http_request.readyState == 4) { // 判断对象状态
if (http_request.status == 200) { // 信息已经成功返回，开始处理信息
obj.innerHTML=http_request.responseText;
} else { //页面不正常
alert("您所请求的页面有异常。");
}
}
}

//function MyShow()
//{
// timer = window.setInterval("send_request('http://www.google.com','ajaxview')",1000);//定时更新
//}
</script>
</head>

<body onload="send_request('http://www.google.com',document.getElementById('ajaxview1'));send_request('http://www.baidu.com',document.getElementById('ajaxview'))">

<table style="width: 100%">
<tr>
<td>读www.google.com</td>
<td><div id="ajaxview1"></div></td>
</tr>
<tr>
<td>读www.baidu.com</td>
<td><div id="ajaxview"></div></td>
</tr>
</table>

</body>

</html>


结果显示类型不批配，怎么改，求教!!!!!!