File Source for chat

<?php
require ('../inc/global.inc.php');
define('FRAME','footer');
echo '<html><head><style>';
/*
* Choose CSS style (platform's, user's, or course's)
*/
$platform_theme = api_get_setting('stylesheets'); // plataform's css
$my_style=$platform_theme;
if(api_get_setting('user_selected_theme') == 'true')
{
$useri = api_get_user_info();
$user_theme = $useri['theme'];
if(!empty($user_theme) && $user_theme != $my_style)
{
$my_style = $user_theme; // user's css
}
}
$mycourseid = api_get_course_id();
if (!empty($mycourseid) && $mycourseid != -1)
{
if (api_get_setting('allow_course_theme') == 'true')
{
$mycoursetheme=api_get_course_setting('course_theme');
if (!empty($mycoursetheme) && $mycoursetheme!=-1)
{
if(!empty($mycoursetheme) && $mycoursetheme != $my_style)
{
$my_style = $mycoursetheme; // course's css
}
}
}
}
echo '@import "'.api_get_path(WEB_CODE_PATH).'css/'.$my_style.'/default.css'.'";';
echo '</style></head><body><br>';
/*
==============================================================================
FOOTER
==============================================================================
*/
Display::display_footer();
?>

Source for file chat_footer.php