searchDialog = new SearchDialog();
searchDialog = new SearchDialog(locationOnScreen, treeDimension);
	public static SearchDialog getSearchDialog() {		SearchDialog searchDialog = null;		if (!MatrixDialog.hasDialog(SearchDialog.class)) {			searchDialog = new SearchDialog();			MatrixDialog.putDialog(searchDialog);		} else {			// bring the seach dialog to the front			searchDialog = (SearchDialog) MatrixDialog.getDialog(SearchDialog.class);			searchDialog.toFront();		}		return searchDialog;	}