I have a project due Sunday and my timeline has weird spaces and boxes in it

I've tried clicking window and setting the arrangement to how it was when I first got it but that hasn't worked. I'm currently editing a video thats due Sunday and this is stressing me out, I'll include a picture of the timeline, please get back to me ASAP.

(Not sure if the pic posted here, if not, here's another link to it http://tinypic.com/r/34qa4vp/6)