.NET browser files
I started learnign .NET coupld of weeks ago and while I am (surprisingly) finding it quite a charm it comes with its own bag of pecularities (read features). Aparently MS made it possible that controls could be rendered with different html in different browsers depending on the level of support. While I anticipate it will be very useful in future when I am not spending 90% of time digging throught MSDN documentation, it resulted in a of hear pulling session, but then google came to the rescue.
Aparently there are browser files that when palced within App_Browsers folder in the root of your project will affect what and how gets rendered.
There is wealth of info out there on the subject. These are the articles that helped me to sort this out:

