[imissmyjuno]

It's not an answer to you directly but more of an observation: The effect for this page is very laggy on a 1-year old MBP, and makes the text barely readable until a certain scrolling point is reached. I do not understand the purpose of using the effect here or in 9/10 cases I see it on sites. It introduces pointless visual candy with usually zero or negative practical benefit. Makes me think of the DHTML days.

[mneorr]

unfortunately we wrote it on an Macbook Air, where it worked pretty good. It lags horribly on an MBP retina, we might fix that