On the main page of wikivoyage there is a map at the top. Different continents on the map should be clickable as you can in the online version. In xowa it is just a single image and clicking on it takes you to the description page (as is the behaviour with normal images).
You seem to have CSS turned off.
Please don't fill out this field.
Thanks for the detailed description.
The map uses the <ImageMap> extension which is only partially implemented in XOWA. I'll look at implementing it fully in a future release after offline images. I created a ticket for it here
I'm moving this ticket to resolved. Further updates will be at the ticket
This seems to be a sourceforge bug. The item appeared for moderation today, but it was created on 2013-10-23.