1) Script Title: Switch menu 'error http 403'

2) Script URL (on DD):http://www.dynamicdrive.com/dynamici...switchmenu.htm

3) Describe problem:

I have just changed my navigation on my site www.walgrave-village.co.uk to
switch menu. My site is quite old so has frames. The navigation is in 'leftframe'

It work fine in firefox but in IE6 and IE9 when the link is click it opens but then changes to an error http 403 page in the leftframe.

Any ideas to rectify this please.