<script type="text/javascript">
function plogin_onclick() {
var Location="http://mail.*****/exchange/"; //你的Exchange默认登录地址（ 填入你自己的域名）
var serpath=http://mail.*****/; //当输入错误时，返回的地址。
var uname=document.getElementById("user").value;
var upwd=document.getElementById("pwd").value;
if (document.getElementById("user").value==""){
alert("帐号不能为空！");
document.getElementById("user").focus();
return false;
}
if (document.getElementById("pwd").value==""){
alert("密码不能为空！");
document.getElementById("pwd").focus();
return false;
}
var auth = new ActiveXObject("msxml2.xmlhttp");
auth.open("get",Location,false,document.getElementById("user").value ,document.getElementById("pwd").value );
auth.send();
switch(auth.status){
case 200:
form1.action=Location;
form1.submit;
break;
case 401:
alert("帐号无效或密码错误。");
form1.action=serpath;
form1.submit;
break;
default:
alert("服务器发生错误，请稍后再试！");
}
}
</script>
</head>
<body topmargin="0" onload="document.forms[0].user.focus();">
<form id="form1" action="" onsubmit="return plogin_onclick()">
<div align="center">
<table width="863" border="0" cellpadding="0" cellspacing="0">
<tr>
<td height="100"> </td>
<td> </td>
</tr>
<tr>
<td width="585" height="433"><img src="images/mail_left.jpg" width="585" height="433" /></td>
<td><table width="279" border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="279" height="152"><img src="images/mail_top.jpg" width="279" height="152" /></td>
</tr>
<tr>
<td width="279" height="30" background="images/mail_user.jpg">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="62"></td>
<td width="217" align="left">
<input id="user" type="text" maxlength="20" style="90px;" /></td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="279" height="34" background="images/mail_pwd.jpg">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="62"></td>
<td width="217" align="left">
<input id="pwd" type="password" maxlength="20" style="90px;" /></td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="279" height="217" background="images/mail_login.jpg" valign="top">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="279" height="20" align="center"> </td>
</tr>
<tr>
<td height="197" valign="top">
<input type="image" src="images/mail_btn.jpg" width="86" height="33" />
</table>
</td>
</tr>
</table></td>
</tr>
</table>
</div>
</form>
</body>
</html>