http://www.codedigest.com/Articles/ASPNET/52_ASPNET_35_AJAX_and_WebServices__.aspx
http://blogs.microsoft.co.il/blogs/maordavid/archive/2007/05/11/How-to_3A00_-Calling-Web-Services-methods-from-Client-Script-in-ASP.NET-AJAX.aspx
http://greatfriends.biz/webboards/msg.asp?id=57701
http://www.codeproject.com/KB/aspnet/10ASPNetPerformance.aspx
http://www.codeproject.com/KB/ajax/MakingGoogleIG.aspx