sstephenson/prototype — pull request #83 by victor-homyakov (2012-11-06 14:45:15+00:00)
Title: Fix for ticket 1282

Attempt to fix https://prototype.lighthouseapp.com/projects/8886/tickets/1282-latest-prototypejs-from-github-repo-fails-in-opera

Opera (at least 11.X) has false positive result in feature test `'styleFloat' in DIV.style`, but should have its own `getStyle_Opera` and standard `setOpacity`/`getOpacity`.

Another variant:

```javascript
if (Prototype.Browser.Opera) {
// Opera also has 'styleFloat' in DIV.style
methods.getStyle = getStyle_Opera;
} else if ('styleFloat' in DIV.style) {
methods.getStyle = getStyle_IE;
}
if (!STANDARD_CSS_OPACITY_SUPPORTED) {
methods.setOpacity = setOpacity_IE;
methods.getOpacity = getOpacity_IE;
}
```