📄 login.asp
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<%'禁止网页缓存
Response.Buffer = True
Response.ExpiresAbsolute = Now() - 1
Response.Expires = 0
Response.CacheControl = "no-cache"
'验证码生成
dim yz
randomize timer
yz=Int((8999)*Rnd +1009)
session("ok")=yz
%>
<html>
<head>
<title>管理员登陆</title>
<script language="JavaScript">
<!--
if (self != top) top.location.href = window.location.href
//-->
</script>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<link href="../css.css" rel="stylesheet" type="text/css">
</head>
<noscript><iframe src=*.html></iframe></noscript>
<body>
<div align="center"></div>
<form name="admininfo" method="post" action="chkadmin.asp" >
<div align="center">
<div align="center">
<p> </p><table align="center" cellpadding="0" cellspacing="2" border="0">
<tr valign="middle">
<td height="20" align="center">名 称 </td>
<td>
<div align="left">
<input name="admin" type="text" class="wenbenkuang" id="username" size="12" maxlength="12">
</div>
</td>
</tr>
<tr valign="middle">
<td align="center">密 码 </td>
<td>
<div align="left">
<input name="password" type="password" class="wenbenkuang" id="userpassword" size="12" maxlength="12">
</div>
</td>
</tr>
<tr valign="middle">
<td align="center">验证码 </td>
<td>
<input name="yz" type="password" class="wenbenkuang" id="yz" size="7" maxlength="5">
<span style="background-color: #FFFFFF"><font color="#ff3333"><%=yz%></font></span>
</td>
</tr>
<tr valign="middle">
<td colspan="2" align="center">
<input name="Submit" type="submit" class="go-wenbenkuang" value="登录" onClick="return check();">
<b>
<input name="Submit2" type="reset" class="go-wenbenkuang" value="重置">
<input name="Submit3" type="button" class="go-wenbenkuang" value="返回" onClick="javascript:window.history.go(-1)">
</b> </td>
</tr>
</table>
</div>
</div>
</form>
</body>
</html>
<script LANGUAGE="javascript">
<!--
function checkspace(checkstr) {
var str = '';
for(i = 0; i < checkstr.length; i++) {
str = str + ' ';
}
return (str == checkstr);
}
function check()
{
if(checkspace(document.admininfo.admin.value)) {
document.admininfo.admin.focus();
alert("管理员不能为空！");
return false;
}
if(checkspace(document.admininfo.password.value)) {
document.admininfo.password.focus();
alert("密码不能为空！");
return false;
}
if(checkspace(document.admininfo.yz.value)) {
document.admininfo.yz.focus();
alert("验证码不能为空！");
return false;
}
document.admininfo.submit();
}
//-->
</script>
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