Window Bottom is recognized as 'leaving'

[wschwaiger]

Hi,

I found this issue while using your plugin on our website. I made a little video to show you what is happening. Focus on the black and white logo in the nav bar. This also happens in your example code. Issue confirmed in Safari/Chrome on Win/Mac; https://dl.dropbox.com/u/14655800/scrollspyBug.m4v

I used to fix this issue by adding:
max: $('body').height()
to the options

Cheers,
Wolfgang