/* MU Specific Function to Determine Actual Image Path */
 
function get_mu_image_path ($img_src) {
    global $blog_id;
	if (isset($blog_id) && $blog_id > 0) {
		$imageParts = explode('/files/', $img_src);
		if (isset($imageParts[1])) {
			$img_src = '/blogs.dir/' . $blog_id . '/files/' . $imageParts[1];
		}
	}
	return $img_src;
}

// Add the media box
 
function childtheme_media_box() {
  //This gets the image url that I had set in the theme options
  $mediabox = get_option('childtheme_mediabox');
    if(!empty($mediabox)) {
      //This calls the function we just defined above to get the correct image path
      $mediabox = get_mu_image_path($mediabox);?>
      <div id="mediabox">
      //This displays the image using the TimThumb script
      <img src="<?php bloginfo('stylesheet_directory'); ?>/scripts/timthumb.php?src=<?php echo $mediabox; ?>&amp;w=960&amp;zc=1" alt="Media Box Image" />
      </div>
<?php }
}
 
//This is a Thematic filter that will place this html in the correct spot in the theme
add_action('thematic_belowheader','childtheme_media_box',1);