good idea Prathamesh for the olap grid in crystal...i keep forgetting about that feature.
i've also attached a dev report that uses a set of formulae to keep track on what's being clicked on for open and close. it uses opendocument to rehit the report and so must be used in the dhtml viewer.
@Saul Garcia, if you want to try this method out, please extract the zip contents and change the .txt extension to .rpt. in order to use it against your dataset, you would just add your dataset to the report, change the 4 formulae to use your data, remove the old dataset, and then publish to your enterprise environment with saved data.
another suggestion would be to look at sap analysis.
cheers,
jamie