I created this simple timeline control for use in Hawk [1]. The existing timeline controls I could find didn't quite do what I needed, and they were all much larger than I found acceptable. For example vis.js [2] does do what I need, but even stripped down to just the timeline control, it's still over 600k. My control is about 14k and compresses to 2.5k.
[1]: http://hawk-ui.github.io
[2]: http://visjs.org