How can I remove the blue box under the slideshow pictures??

[diers]

I tried everything, install, script, style, languages...  where can I look for the code to erase this blue box und the slideshow pictures??? 
THANK YOU!

This is the corpus delicti:
http://www.kaiarturdiers.de/cpg144/displayimage.php?album=1&pid=10&slideshow=6000

[Stramm]

modify iclass navmenu in the css

?? you've rendered the 'stop slideshow' nearly invisible... intended?

[diers]

Thank you!!

Yes, that was intended, for uploading I change the entire source for a few minutes, after that I leave it as is since I don't want anyone to play around with my stuff.