Call to undefined function: page_open()

[Édwin Floriani]

I\'m trying to use remote_login.php3.. but appears this error:

Fatal error: Call to undefined function: page_open() 
in /httpd/netron.com.br/www/r_login.php3 on line 26

My directories:

/httpd/horde
/httpd/horde/imp
/httpd/pages/www

When the remote_login.php3 is in /httpd/horde/imp, it works fine... But when I 
put it in /httpd/pages/www it doesn\'t work...

And i dont know why it occurs, because I changed the lines bellow in 
remote_login.php3:

require \'../../horde/lib/horde.lib\';
require \'../../horde/imp/lib/imp.lib\';
require \'../../horde/imp/config/defaults.php3\';
require \'../../horde/imp/config/mailbox.php3\';
require \'../../horde/config/horde.php3\';
require \'../../horde/imp/config/html.php3\';

Please, give me a light :)

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            Édwin Floriani
         System Administrator
        (sysadm@ceduphh.com.br)
       http://www.ceduphh.com.br
          irc.ceduphh.com.br
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