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<?php require_once('Connections/jc.php'); ?>
<?php
// *** Validate request to login to this site.
if (!isset($_SESSION)) {
  session_start();
}

$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
  $_SESSION['PrevUrl'] = $_GET['accesscheck'];
}

if (isset($_POST['username'])) {
  $loginUsername=$_POST['username'];
  $password=$_POST['password'];
  $MM_fldUserAuthorization = "";
  $MM_redirectLoginSuccess = "admin.php";
  $MM_redirectLoginFailed = "gindex.php";
  $MM_redirecttoReferrer = false;
  mysql_select_db($database_jc, $jc);
  
  $LoginRS__query=sprintf("SELECT user_name, user_name FROM admin WHERE user_name='%s' AND user_name='%s'",
    get_magic_quotes_gpc() ? $loginUsername : addslashes($loginUsername), get_magic_quotes_gpc() ? $password : addslashes($password)); 
   
  $LoginRS = mysql_query($LoginRS__query, $jc) or die(mysql_error());
  $loginFoundUser = mysql_num_rows($LoginRS);
  if ($loginFoundUser) {
     $loginStrGroup = "";
    
    //declare two session variables and assign them
    $_SESSION['MM_Username'] = $loginUsername;
    $_SESSION['MM_UserGroup'] = $loginStrGroup;	      

    if (isset($_SESSION['PrevUrl']) && false) {
      $MM_redirectLoginSuccess = $_SESSION['PrevUrl'];	
    }
    header("Location: " . $MM_redirectLoginSuccess );
  }
  else {
    header("Location: ". $MM_redirectLoginFailed );
  }
}
?>
<html>

<head>
<meta name="GENERATOR" content="Microsoft FrontPage 5.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<link href="css/style.css" rel="stylesheet">
<title>PHP教材管理系统</title>
<script language="JavaScript">
<!--
<!--

function Juge(theForm)
{
  if (theForm.username.value == "")
  {
    alert("请输入您的注册名!");
    theForm.username.focus();
    return (false);
  }
  if (theForm.password.value == "")
  {
    alert("请输入您的密码!");
    theForm.password.focus();
    return (false);
  }
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
//-->
</script>
</head>

<body bgcolor=#21415a>

<p> </p>
<p> </p>
<p align="center">
<img border="0" src="img/index.jpg" width="568" height="252"></p>
<form action="<?php echo $loginFormAction; ?>" name="theform" method="POST" onSubmit="return Juge(this)">
<div align="center">
  <center>
<table border="0" width="568" bgcolor=#21415a style="border-collapse: collapse" bordercolor="#111111" cellpadding="0" cellspacing="0">
  <tr>
    <td width="100%" style="font-size: 12px">
      <p style="margin-top: 0; margin-bottom: 0" align="center">
      <font color="#FFFFFF">身份登陆:</font>
      <select name="select" id="select" onChange="MM_jumpMenu('parent',this,0)">
        <option value="index.php">学生</option>
        <option value="lindex.php">老师</option>
        <option value="xindex.php">系级人员</option>
        <option value="gindex.php" selected>管理员</option>
            </select>
      </p>
     
      <p style="margin-top: 0; margin-bottom: 0" align="center">
       </p>
     
 <table border="0" width="333" bgcolor=#21415a align=center height="72">
        <tr>
                <TD width="125" style="font-size: 12px" height="17">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
                <font color="#FFFFFF">用&nbsp;户&nbsp;名:</font> </TD>  
                <TD width="194" style="font-size: 12px" height="17">   
                  <input type="text" name="username" size="17" class="text" onBlur="this.className='text'" onFocus="this.className='textedit';this.select()">  
                </TD>  
        </tr>  
        <tr>  
                <TD width="125" style="font-size: 12px" height="13">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
                <font color="#FFFFFF">密&nbsp;&nbsp;&nbsp;&nbsp;码: </font> </TD>  
                <TD width="194" style="font-size: 12px" height="13">   
                  <INPUT type=password maxLength=20 name=password size="17" class="text" onBlur="this.className='text'" onFocus="this.className='textedit';this.select()">  
                </TD>  
        </tr>  
        <tr>  
                <TD align=middle   
            colSpan=2 width="325" style="font-size: 12px" height="30">   
                  <p align="center" style="margin-top: 0; margin-bottom: 0">   
                   </p>   
                  <p align="center" style="margin-top: 0; margin-bottom: 0">   
                  <INPUT type=submit value=" 登 录 " name=login class="buttonface"> &nbsp;&nbsp; 
                  <INPUT type=reset value=" 清 除 " name=qingchu class="buttonface">   
                  </p>   
                </TD>   
        </tr>   
      </table>   
     
    </td>   
  </tr>   
</table>   
  </center>
</div>
</form>
</body>

</html>
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基于php的教材管理系统