老是提示没有权限怎么回事？

[shijiesj]

<SCRIPT ID=clientEventHandlersJS LANGUAGE=javascript>
function plogin_onclick() {
strA = "name=login.name.value&pwd=login.name.value";
var Location="http://xxx/";
var auth = new ActiveXObject("msxml2.xmlhttp")

auth.open("post",Location,false )
auth.setRequestHeader("Content-Length",strA.length);
auth.setRequestHeader("CONTENT-TYPE","application/x-www-form-urlencodedauth.send(strA);

switch(auth.status){
case 200:
window.location.href = Location;
break;
case 401:
alert("用户无效或密码错误。");
break;
default:
alert("对不起，服务器发生错误，请稍后再试！");
}
}
//-->
</SCRIPT>