Προστασία ιστοσελίδας με κωδικό πρόσβασης

<script language="javascript">
<!--//
/*This Script allows people to enter by using a form that asks for a
UserID and Password*/
function pasuser(form) {
if (form.id.value=="user") {
if (form.pass.value=="password") {             
location="http://thesecretmetin2.weebly.com/new-page.html"
} else {
alert("Invalid Password")
}
} else {  alert("Invalid UserID")
}
}
//-->
</script>

<center>
<table bgcolor="white" cellpadding="12" border="1" style="border: 0px dashed #FF0000">
<tr><td colspan="2" bordercolor="#FFFF00" style="border: 1px solid #FF0000"><center><h1><i><b>
   <font size="3">Login
Area</font></b></i></h1></center></td></tr>
<tr><td height="30" bordercolor="#FFFF00" style="border: 1px solid #FF0000"><h1><i><b>
   <font size="3">UserID:</font></b></i></h1></td>
   <td height="64" bordercolor="#FFFF00" style="border: 1px solid #FF0000"><form name="login"><input
name="id" type="text"></td></tr>
<tr><td bordercolor="#FFFF00" style="border: 1px solid #FF0000"><h1><i><b>
   <font size="3">Password:</font></b></i></h1></td>
   <td bordercolor="#FFFF00" style="border: 1px solid #FF0000"><input name="pass"
type="password"></td></tr>
<tr><td bordercolor="#FFFF00" style="border: 1px solid #FF0000" height="51"><center><input type="button" value="Login"
onClick="pasuser(this.form)"></center></td>
   <td bordercolor="#FFFF00" style="border: 1px solid #FF0000" height="51"><center><input
type="Reset"></form></td></tr></table></center>