XMouseWheel does not work in Salesforce

When I try to use XMouseWheel on my salesforce site to scroll down to any set of elements that are offscreen, it doesn’t appear to work. I have had limited success with clicking on an element in that area, sometimes that forces the scroll down and sometimes it doesn’t. I also tried using xclick with the x, y coordinates of the desired element but that doesn’t seem to work either. Is this because there can be several scrollable sections in Salesforce?