[Plugin: Friendly ResponsiveSlides Slider] Placement problem

This is very nice, but I’ve got a placement problem when using it, as I have <ul> styled with a left-margin of 30px.

I can see that margins are set to 0 with the .rslides class though, but I cannot figure out why this is happening. Any ideas?

Why is <ul> used for this, out of interest?

Thanks

http://ww.wp.xz.cn/extend/plugins/friendly-responsiveslides-slider/