some "var(s)" from php

I mean ...

function fckeditor_create ($text_name_value, $fck_value, $fck_settings_name, $fck_width='100%', $fck_height='300')
{
global $config;
require $config->path_root."includes/fckeditor/fckeditor.php";

$oFCKeditor = new FCKeditor($text_name_value);
$oFCKeditor->CSSPath = $config->img_url; <- new var ...
$oFCKeditor->BasePath = $config->base_url."includes/fckeditor/";
$oFCKeditor->Value = $fck_value;

//paramenters -----------------------------------------------------
$oFCKeditor->Width = $fck_width;
$oFCKeditor->Height = $fck_height;
$oFCKeditor->ToolbarSet = $fck_settings_name;
//paramenters -----------------------------------------------------

$oFCKeditor->Create();
}

How I can add var (like) FCKConfig.CSSPath into fckconfig.js

$config->img_url = 'http://somesite/themes/themename/';

$oFCKeditor->Config['EditorAreaCSS'] = "/path/to/your/style.css";