[jQuery] localScroll question

[jQuery] localScroll question

hello!
i just released a website about one of those Belgian artistic movements, available here: <a href="http://www.belgicaneum.be">http://www.belgicaneum.be</a> . It's a bunch of artists who reflected together on the future separation of Belgium, declaring their love (or hatred) of motherland. Aaanyway...
don't blame me for the weird navigation system, it's "artistic" and on purpose (so says the customer, bah).
To the point: i used the uber cool localScroll plugin, on one page: it works fine in FF, but IE gives me troubles. Some anchor links don't get their content correctly centered. would it be because i use the :target state to highlight the related zone ?
can someone tip me on the cause of the issue?: <a href="http://www.belgicaneum/fra/artistes/index.html#t">http://www.belgicaneum/fra/artistes/index.html#t</a>
thank you!
alexandre<br clear="all">
PS: i used the excellent galleria plugin, if you want to see it in real life action: <a href="http://localhost/belgicaneum/fra/projets/same-same/#img/img-01.jpg">http://localhost/belgicaneum/fra/projets/same-same/#img/img-01.jpg</a>