internetarchive/umbra — pull request #18 by nlevitt (2014-04-04 19:16:38+00:00)
Title: to address ARI-3771 "Lasalle Facebook last scrolldown doesn't work", scr...

...oll by 200 pixels each time instead of 100 on facebook, which avoids hitting the 15 second idle timeout in my tests; also detect when unclicked targets are above the screen/viewport and not below and log it as such, instead of trying to continue scrolling down