Template and Simple Image Gallery gives unwanted LI

Hi, I used SIG in an article to embed some gallery's.
The pictures in the galery's are now what it looks like listed with a LI, at least I see the icon for the LI there.

I thought of making the default for LI a blank image, but I have no idea how to do that.

example : http://www.geertsinstallaties.nl/index. ... &Itemid=40

Hi

Please show me an article with SIG in it. I'll check the code and will tell You what to do.