public void decorate(Object element, IDecoration decoration) {
		if (image == null) {
			image = Activator.getDefault().
				getImageRegistry().getDescriptor(Activator.PROJECT_DECORATOR);
		}

		IProject p = (IProject) element;

		try {
			if (p.isOpen() && p.hasNature(ProcessingProjectNature.class.getName())) {
				decoration.addOverlay(image, POS);
			}
		} catch (CoreException e) {
			e.printStackTrace();
		}	
	}