CSS help?? Text change in mootools accordian?

Hi there, I am currently making up my portfolio website and have come across a problem which im sure is resolvable.

My test link is here >> Test..! <<

Now I have used mootools accordian.

What I want to change is the titles in the bars so it tells the user to click it to return.

For instance,

The fist one says 'Sans-serif type chart', but when a user clicks on it to view it I want the wording to change and say 'Back'.

This obviously wont be just a rollover effect as I want it to stay there once rolled off, but once it says 'Back' and it is clicked on again, I want it to return to its original state, 'Sans....'


Anyone able to help me??

Im sure you know, but if you have firefox you are able to download the lot to view the html code if you want.


Thanks a bunch

Nick