Center Slider?

Hi,

I am trying to Center the slider and am not sure if that is possible. I would like it to be a centered, long skinny one like the one on the silioquywp.com website. I cannot figure out how to make the change. My website is rna.osu.edu

Any information would be appreciated!

http://ww.wp.xz.cn/plugins/soliloquy-lite/