How do I change the IMG SRC= base location?

Hi,

im using fckeditor to edit my html templates which
already contain images.

img src='template_images/imagename.gif'

and I have fckeditor running under /store3/admin/

when i run fckeditor the image isn't displayed only the place holder with a red cross. If I change my IMG SRC location to

img src='/store3/admin/template_images/imagename.gif'

then it works!

how can i get fckeditor to start looking for my images at '/store3/admin/' as a base location?

I tried editing FCKConfig.BaseHref to..

FCKConfig.BaseHref = '/store3/admin/' ;

but it didn't work

anyone know how i can change the base location for my images so fckeditor displays them?

many thanks

Stu