http://msmvps.com/blogs/egoldin/archive/2007/05/08/silverlight-is-coming-c-calls-from-javascript-and-more.aspxSoon you won't need to go to the server to treat your client-site javascript with some c# calls. Watch this technology, it looks promising: Silverlight . Scott Guthrie: Silverlight opens up a ton of opportunities to build significantly richer clientenCommunityServer 2008.5 SP2 (Build: 40407.4157)