Trying out jQuery - here's an Accordion in less than 10 lines of javascript!
You can also see the demo / code here. [in case the iframe gets blocked]
How it works
Structure:
Accordion
-- AccordionPage
------AccordionHeader
------AccordionContent
-- AccordionPage
------AccordionHeader
------AccordionContent
Logic:
On-click of Header - hide all 'content' and display the 'content' which is a sibling of the header.
Javascript: