Need to apply some formatting to a UL list. A little css help would be great.

How can I make the "bullet mark" go away from each UL?
How can I remove the indent applied to content within the ul (left, top, bottom and right)? I have a portion of a nav that's inside a UL and expanded/contracted via a js.
Text size of UL in a LI. I tried both font-size:2; and text-size:2; to no avail.

Thanks for your help.