Seems like it may be confusing, especially to first time users. I don't play Trickster Online anymore (and haven't in a really long time) but as a new user I would have no idea that I could access the dungeons by clicking on the little "d" by an image.
Also the images for the maps (the images of npcs) seem rather... unnecessary to me. I can see wanting easily distinguishable areas for quickly finding the map you are looking for but I think this can be achieved by a background color behind the map titles. And this way the actual links that people might want to click on wouldn't have to be accessed using the "show" links because there would be no images taking up the space where they need to go.
This is of course just my personal preference.