if ( url != null && url.length( ) > 0 )
if ( url == null )
	private static void addURLValue( StringBuffer content, String url )	{		if ( url != null && url.length( ) > 0 )		{			// TODO: escape URL string			content.append( " url('" ); //$NON-NLS-1$			content.append( url );			content.append( "')" ); //$NON-NLS-1$		}	}