wet-boew/wet-boew — pull request #2243 by patheard (2013-05-06 13:31:19+00:00)
Title: Expand collapse all: check for addListener support (fixes IE9)

PR fixes an IE9 javascript error by checking for addListener support:

```javascript
if (window.matchMedia && window.matchMedia.addListener) {
```

Other changes are all whitespace trimming.