用PHP制作登录页面程序(2)

<form name="form1" method="post" action="<?php echo PHP_SELF; ?>" >
<table width="289" border="1" cellspacing="0" cellpadding="1" bordercolor="#999999" align="center">
<tr bgcolor="#999999">
<td>
<div align="center"><font color="#FFFFFF" size="4">用户登录</font></div>
</td>
</tr>
<tr>
<td>
<table width="267" border="0" cellspacing="0" cellpadding="5" align="center">
<tr>
<td width="94">
<div align="right">用户：</div>
</td>
<td width="169">
<input type="text" name="user_login" size="16" maxlength="16" value="<?php echo user_login; ?>">
</td>
</tr>
<tr>
<td width="94">
<div align="right">口令：</div>
</td>
<td width="169">
<input type="password" name="user_pass" size="16" maxlength="16">
</td>
</tr>
<tr>
<td colspan="2">
<div align="center">
<input type="submit" name="login" value=" 登 录 ">
<input type="button" name="return_index" value="返回首页" onClick="form1.action='../include/goto_page.php3?dist_page=../main.php3';form1.submit(