SWFObject 2.1 now available

`You can download SWFObject 2.1 from the SWFObject 2 home or downloads pages.

SWFObject 2.1 addresses the following issues:

1. Memory leaks in Internet Explorer. There were 2 categories of memory leaks: small ones caused by the library’s structure (use of closures) and use of events, and big leakage that was related to dynamic publishing and Adobe’s External Interface (note: also available in SWFObject 1.5)
2. Internet Explorer 5.0/5.5 support issues
3. Script errors in Internet Explorer in case an object element is removed during a visit
4. Alternative content display issues for Safari 3+ with plug-ins disabled
5. Removal of isDomLoaded tests from various methods of the public API to enable that dynamically inserted scripts - including bookmarklets - can use these functions
6. Dynamic publishing could previously fire multiple instances of Adobe Express Install
7. Fixed dynamic publishing reference issues when using a shared param or attributes JavaScript Object

It contains the following enhancements:

1. New explicit SWF removal code - especially needed to completely and safely remove a SWF in Internet Explorer - via the new swfobject.removeSWF(idString)
2. Shortened Flash version strings can be used, so "9.0.0" can now be written as "9"
3. For dynamic publishing now 0, null, false or {} can be used when no flashvars, parameters or attributes have to be defined (previously you could only use false or {})
4. Added a filter to the swfobject.getQueryParamValue method to secure the library from XSS attacks (Geoff will publish a more detailed security advisory soon)