Javascripts does not execute until ABOUT:BLANK is added to Trusted Sites security zone.

Hi,

I am using ASP.NET and MVC3 for developing a website. I am trying to dynamically pull HTML from the web server and add the HTML to existing DOM elements on a already loaded page. However, after I add the dynamic content, the javascripts addressing the dynamic content does not work. (Example: The dynamic content has a dropdown. The event handler javascripts for the dropdown do not get executed). 

However, when I add "about:blank" to the Trusted Sites security zone, I do not face this problem.

I observed this problem in IE9 (not sure if this happens in IE7 or 8). Other browsers (Firefox, Chrome) do not give me such issues.

I am not sure what is going wrong in IE9. Any pointers towards resolving this?

Regards,

Ronith