为什么我的WebForms报表查看器不显示图标资源？

I am trying to integrate the SSRS WebForms report viewer into an ASP.NET MVC2 app. The viewer comes up, but none of the javascript is evaluated. It looks like all of the javascript and icon resources come out of calls to the "Reserved.ReportViewerWebControl.axd" pseudo url. My MVC app is ignoring calls to .axd URI's, but I get tons of javascript errors in the page that's hosting the report viewer. Is there something else that I need to do to get the calls to the .axd handler to work? That particular handler is in my web.config and it looks like this:I am trying to integrate the SSRS WebForms repo