Check if div is viewable in window?

Question

I have a one page site with fixed navigation and using a scroll script, very similar to this: http://www.ivanjevremovic.in.rs/live/temptation/single/orange/index-cycle-slide

Answer 1

Use $('#element').offset().top; to detect element top side.

$(window).scrollTop(); to detect current scroll position.

And $(window).height(); to detect current window height.

And after that steps you actually need only something easy math calculations.