Im beginner and im experimenting on a website with fixed and relative postions, what i want to do is to stop bottom part when the two bottom lines(div .top_divider_line) touches nav menu(div .top_holder) here is the preview from site where im stuck. http://elexoj.com/test/ I think making it with jquery will be lot easier but i've no idea how to do it, i'll really appreciate your help. Thank You!