/**
  * Supply the content for a custom column
  *
  * @since 0.1
  * 
  * @param	array	A singular attachment (post) object
  * @return	string	HTML markup to be placed inside the column
  */
 function column_icon($item)
 {
     return MLAMime::mla_get_icon_type_image($item->icon_type);
 }