Mark Pilgrim just released this nifty little flash block detector:
This is a pure-JavaScript library that detects whether Flash is blocked on the current page due to a Flash blocking extension. The current version can detect
- FlashBlock #1 for Chromium / Google Chrome (Windows/Mac/Linux)
- FlashBlock #2 for Chromium / Google Chrome (Windows/Mac/Linux)
- FlashBlock for Firefox (Windows/Mac/Linux)
- ClickToFlash 1.5.x (Mac/Safari only)
Pretty cool, but there’s a small catch:
If a Flash blocker is active, your callback function will be called almost immediately. If no Flash blocker is active, your callback function will be called after the 5 second timeout.
(Via Mark Pilgrim.)