Hello - I would REALLY appreciate your help.

I haven't done much javascripting, but am trying to add it to a site and don't understand why it isn't working and have now stared at it too long!

I am just starting to make a site at www.lockbundsculpturefoundry.co.uk and on the artists page (www.lockbundsculpturefoundry.co.uk/artists.html) I want it to change the main image when I roll over the name of a different artist.

I have tried to setup the coding, but it is not working - can you look at my source and point out where I am being stupid?! (be kind!!)

Many thanks