That doesn't work so well, since the div you are monitoring is actually removed when the page is modified. Try this instead:
```
var bodyContent = doc.getElementById('body-content');
if (bodyContent) {
	Z.monitorDOMChanges(bodyContent, {childList: true});
}
```
Unfortunately, detection is run 2 to 3 times on each page load, since Google Play takes a couple passes at filling in the page content, but I don't have a better solution right now.