Currently, it will display the main eg. Assets , Liabilities, etc... table with the respective current assets, fixed assets and so on.

If I click on the Current Assets link, it will go to the 'next page' displaying the items under Current Assets. If I want to go back, I would just click on the Back link.

Example:
Assets
- Current Assets (if I click on this link...)
- Fixed Assets
- Total Assets

'next page' displays:
Current Assets
- Inventory Assets
- Total Current Assets

Is there a way that I can display the drop-down of the items under each Assets (Liabilities and so on) in the 'same page' without jumping to the 'next page'??

Like so:
Assets
- Current Assets
  - Inventory Assets
  - Total Current Assets
- Fixed Assets
- Total Assets

Any idea on what scripts I can use to make it possible.. javascript, collapsible table php scripts, etc. Need your expert advise.

Thanks.