/**
  * Converts the $_POST array from metaCharset (page HTML charset from input form) to renderCharset (internal processing) IF the two charsets are different.
  *
  * @return	void
  */
 function convPOSTCharset()
 {
     if ($this->renderCharset != $this->metaCharset && is_array($_POST) && count($_POST)) {
         $this->csConvObj->convArray($_POST, $this->metaCharset, $this->renderCharset);
         $GLOBALS['HTTP_POST_VARS'] = $_POST;
     }
 }