I have a problem.  I have had this problem for a couple of days.  I have a website where I am using some textboxes with watermarks and a page with a tab control.  These AJAX controls display fine in the browser, however when I try to use them, I am getting a yellow exclamation mark in the browser.  I double-click the error and it shows: "Access is denied".  I originally thought this might be an IIS error (I am running the site on IIS 5.1), but somebody in that forum said that this is a client-script error.  I have tried the site on numerous machines (even one running IE6) and I get the same thing.

What should I be looking for?  Is it something in web.config?

Thanks for the information and help.