if ( refValue == null && element.getStyle( ) == null ) return;
if ( refValue == null ) { if ( ( element instanceof StyledElement ) && ( ( (StyledElement) element ).getStyleName( ) == null ) ) { return; } }
	protected void setStyleRefValue( ElementRefValue refValue )			throws StyleException	{		if ( refValue == null && element.getStyle( ) == null )			return;		doSetStyleRefValue( refValue );	}