<script language="JavaScript">
<!--
function checkpass(){
if((document.form1.username.value == "zt")&&(document.form1.pwd.value == "1111"))
{
alert("验证成功！")
return true
}
else{
alert("您输入的用户名或密码错误，请重新输入！")
return false
}
}
//-->
</script>
</head>
<body>
<form name="form1" method="post">
姓名：<input name="username" type="text"><br>
密码：<input name="pwd" type="password"><br>
<input type="button" name="submit" value="确定" onclick="checkpass();">
</form>
</body>