7/May/2007 
  fixed a security bug which is allowed any users to change files to unexpected extensions
  	1. function.base.php
  	2. ajax_save_image_name.php
  	3. language files
5/May/2007 
      fixed a security bug which is allowed any users to manage any files out of the system root folder
      fixed a bug which unable to recursively delete folders
      make the popup window bigger to fix the silly IE toolbar
      files changed:
      1. function.base.php
      2. class.file.php
      2. test.php