I have installed the ImageMap extension (http://www.mediawiki.org/wiki/Extension:ImageMap) and set $wgImageMapAllowExternalLinks = true
With the following markup
<imagemap> Image:mylogo.jpg rect 0 0 120 60 [[Help]] </imagemap>
It works fine but fails when I use an external link:
<imagemap> Image:mylogo.jpg rect 0 0 120 60 [http://www.mylink.com] </imagemap>
with error <imagemap>: no valid link was found at the end of line 3
Any ideas?