ingame HTML / XML viewer

[dooodat]

the idea is:
having an ingame (resizeable) window with scrollbars for up-down left-right.
the frame should show a XHTML or XML or HTML file (and maybe remember the last position)
think about it like a ingame Browser like Firefox. showing local data would be enough.

the reason:
there might be several reasons to have such an addon, my main reason is to use a leveling guide without alt+tab.
the guide is in html, with a converter it could be converted to XHTML maybe XML.

anyone capable of programming such a thing or giving some hints ?

greetings dooodat