No js- prefixed classes should be in the CSS — fixes #1553

As we say in French: "chose promise, chose due"

![screen shot 2014-02-19 at 16 48 18](https://f.cloud.github.com/assets/85783/2208960/a5ebb24e-9985-11e3-9d5f-bec03ff9d634.PNG)

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