11.1. Architecture Changes

One of the biggest changes in this release is that the AJAX control toolkit and ASP.NET AJAX libraries have now been combined. The libraries have also been open sourced (New BSD License) and donated to the CodePlex foundation as its first project. Microsoft is keen to point out that the decision to open source the libraries won't affect its support, and Microsoft is also encouraging community contributions.

11.1.1. Compatibility

The libraries have been tested with the following browsers (and might work with others, but no guarantees):

• Microsoft Internet Explorer 6, 7, and 8

• Mozilla Firefox 3 and 3.5

• Apple Safari 4

• Opera 10

• Chrome 3

11.1.2. The pageLoad Problem Fixed

Microsoft has fixed a bug present in previous releases, so you will no longer have to manually call the sys.application.initialize() method to ensure that the pageLoad() method is called before the window.onload event occurs (see http://seejoelprogram.wordpress.com/2008/10/03/fixing-sysapplicationinitialize-again/).