OK I just fixed the one on multi-calls mode
![2013-11-18 12 44 47](https://f.cloud.github.com/assets/2406290/1560567/3421a2bc-500c-11e3-8989-422707ee1cc4.png)

But for the big-duration mode I'm not sure, seems it's just good if the following visual is valid? 
https://bug923646.bugzilla.mozilla.org/attachment.cgi?id=813728