System.err.println("looking at dataset ..."+browserDataset.getID());
	private BrowserDatasetData findDatasetData(int dsId) {				// go through some silliness to find the BrowserDatasetData		// that corresponds to ds. must look at _all_ datasets - not		// just those currently being displayed		Iterator iter = allDatasets.iterator();		BrowserDatasetData browserDataset = null;		while (iter.hasNext()) {			browserDataset = (BrowserDatasetData) iter.next();			System.err.println("looking at dataset ..."+browserDataset.getID());			if (browserDataset.getID() == dsId) {				return browserDataset;			}		}		return null;	}