Try this:
<?PHP
if ($SESSION[User_Type] == "public") {
?>
<HEAD>
<TITLE>Browser Redirect</TITLE>
<META Http-equiv="refresh" Content="10; Url=../start_p.htm">
</HEAD>
<BODY>
<p><b>In a few seconds, you will be sent to the login page. Thank you.</b></p>
</BODY>
<?PHP
} //ends if ($SESSION[User_Type]
?>
Other HTML output can go here
The META HTTP-equiv= line does the redirecting
or you can use the PHP Header function
which is explained here:
http://www.php.net/manual/function.header.php