static protected function parseProperties( $string ){
		$list	= array();
		foreach( explode( ';', trim( $string ) ) as $line ){
			if( !trim( $line ) )
				continue;
			$parts	= explode( ':', $line );
			$key	= array_shift( $parts );
			$value	= trim( implode( ':', $parts ) );
			$list[]	= new ADT_CSS_Property( $key, $value );
		}
		return $list;
	}