Thank you both for those answers.
Here's what puzzles me...it looks like that's a client side file, that's part of the AJAX Extensions.
However, I am working a bug that gets thrown when my AJAX toolkit application is run under IE6.
It hits some code that is contained in common.js -- part of the toolkit, but the file name the bug gets trapped in in VS.2005 is called ScriptResource.axd.
So, why does this code appear in the server side AXD file when it's clientside javascript?
And it's part of the toolkit, not the extensions?
John A. Bailo