Clarify the off-by-one-problem
update jslint-globals
fix blurry indicator lines

Thanks to http://stackoverflow.com/a/9311835/2256700
Also declared a variable before using it.
Highlight currentframe in indicator
JSLinted navigation.js
Even more JSLint.
Extract Specialframe-stuff into seperate file
Improve nextSpecial und prevSpecialFrame
do not modify currentFrame outside of updateAll
Show indicator on current frame
Always sort specialframes-array
fix sort to not sort lexicographic
Move specialframes inserting to specialframes-file
WHen the page is loaded.
Merge pull request #37 from MaPePeR/enhance-preloadingindicator

Enhance preloadingindicator. Mark current frame