WebTrends has released an update to their software to improve compatibility with IE7
"Internet Explorer 7 is currently supported in WebTrends OnDemand 8.0b, with the exception of the SmartView module. Product versions prior to 8.0a (software) and 8.0b (OnDemand) do not have support for this important browser update.
The files found below provide a solution for customers with WebTrends Analytics version 8.0a software and Internet Explorer 7. This solution contains updated files for the User Interface server and SmartView."
http://blogs.tamtam.nl/dave/2006/11/17/WebTrends+Releases+Patch+For+IE7+Support.aspx