[PTO]

someone help please =)
Im getting this error:

Unable to add cookies, header already sent.
File: /home/invictus/public_html/rbar1_info.php
Line: 4

here is my current code:

top page

<?
chdir("forum/");
include('forum/global.php');   

// added this line to include the user functions which
// has the fetch_avatar_url() function
include('./includes/functions_user.php');

chdir("../");
?>

where i want login

<?
if ($bbuserinfo['userid']!=0) {
    $username=$bbuserinfo['username'];
    

    // i assigned the avatar url to the variable $user_av and check to see if it's empty.
    $user_av = fetch_avatar_url($bbuserinfo['userid']);
    if($user_av!='')
       $user_av="/forum/" . $user_av;  //replace "/forum/" with your virtual path to your forum pages.

    print("<align='center'><span class='sectionheader'>Welcome back, $username!<br>");
    
    //if the avatar url is not empty, display it
    if($user_av!='')
        print("<img src=\"" . $user_av . "\" vspace=4>");
} else {
?>
<form action='/forum/login.php' method='post' onsubmit='md5hash(vb_login_password,vb_login_md5password)'>
        <script type='text/javascript' src='/forum/clientscript/vbulletin_md5.js'></script>
         
         <span class="sectionheader">Username:</span>
            <input type='text' class='button' name='vb_login_username' id='navbar_username' size='15' accesskey='u' tabindex='1' value='' onfocus='if (this.value == 'username') this.value = '';' /><br>
             
            <span class="sectionheader">Password:&nbsp;</span>
            <input type='password' class='button' name='vb_login_password' size='15' accesskey='p' tabindex='2' /><br>
            <input type='checkbox' name='cookieuser' value='1' tabindex='3' id='cb_cookieuser_navbar' accesskey='c' checked='checked' /><span class='sectionheader'>Remember Me</span><br>
         
         
         
        <input name="submit" type='submit' class='button' accesskey='s' tabindex='4' title='Log In' value='Log In' />
        <input type='hidden' name='do' value='login' />
        <input type='hidden' name='forceredirect' value='1' />             
        <input type='hidden' name='vb_login_md5password' />
        </form>
                        <?

}

?>