#4: Forcing Scrollbars: Eliminating “Horizontal Jumps”
In this screencast I talk about how to force vertical scrollbars onto websites. Without doing this, pages with centered content can appear to "jump" to the left or right when going from a page that needs to vertically scroll to one that does not (and visa versa). I cover two different major techniques for doing this, since they both have their advantages and disadvantages between different browsers.
Links from video: