public static function getRuntimeQueryParameters( $forceElevation = false, $enableElevation = true, $searchText = '' )
    {
        $retArray = array( 'forceElevation'  => 'false',
                           'enableElevation' => 'true' );

        if ( $enableElevation === false or $searchText == '' )
        {
            $retArray['enableElevation'] = 'false';
            return $retArray;
        }

        if ( $forceElevation === true )
        {
            $retArray['forceElevation'] = 'true';
        }

        return $retArray;
    }