scroller script glitch

Hi,

I've just added a scroller script into a webpage - its all working fine, but
has caused a glitch with the menus. Basically the autohide behaviour seems to
have stopped working, so when you move the curser off a sub menu layer it no
longer hides the layer. It was fine until the scroller script was added.

the page is here :
http://www.iainmacdonald.pwp.blueyonder.co.uk/collins_layers.htm

any ideas?

cheers,
Iain