/**
  * Extracts the version number from the page contents.
  * 
  * @return      string
  */
 private function _getVersion()
 {
     $_oUtil = new AdminPageFramework_WPUtility();
     $_sPageBody = $this->_getPageBody();
     $_aHeaders = $_oUtil->getScriptData($_sPageBody, '', array('version' => 'Version'));
     return $_oUtil->getElement($_aHeaders, 'version', '');
 }