怎么在页面加一个在线FTP登陆

<script janguage="javascript">
<!--
// Title: JavaScript - FTP log-on script
function goFtpSite() {
document.location.href = "ftp://" + document.ftp.login.value + ":" + document.ftp.password.value + "@" + document.ftp.url.value;
}
//-->
</script>
<body>
<form name="ftp">
<table border="0" cellpadding="1" cellspacing="1" bgcolor="#000000" align="center">
<tr>
<td>
<table border="0" cellspacing=0 cellpadding=5 align="center">
<tr bgcolor="#bbbbbb">
<td width="75" align="right" bgcolor="#FFCC66">
<font face="arial,helvetica" size="-1">
Ftp://
</font>
</td>
<td bgcolor="#FFCC66">
<font face="arial,helvetica" size="-1">
<input name="url" type="text" value="www.czgwnn.cn" size=15>
</font>
</td>
</tr>
<tr bgcolor="#dddddd">
<td align="right" bgcolor="#FFE98E">
<font face="arial,helvetica" size="-1">
Login:
</font>
</td>
<td bgcolor="#FFE98E">
<font face="arial,helvetica" size="-1">
<input type="text" size="15" name="login" maxlength="20">
</font>
</td>
</tr>
<tr bgcolor="#bbbbbb">
<td align="right" bgcolor="#FFCC66">
<font face="arial,helvetica" size="-1">
Password:
</font>
</td>
<td bgcolor="#FFCC66">
<font face="arial,helvetica" size="-1">
<input type="password" size="15" name="password" maxlength="20">
</font></td>
</tr>
<tr bgcolor="#ffffff">
<td colspan="2" align="center">
<font face="arial,helvetica" size="-2">
<input type=button onclick="goFtpSite();" value="进入">
<input type=reset value="清除">
</font>
</td>
</tr>
</table>
</td>
</tr>
</table>
</form>