ClientIDMode is a big help for JQuery in ASP.NET WebForms

Problem:

Client ID for a server side tag is generated dynamically in ASP.NET, particularly in user control.

This way will make inconvenience for JQuery selector. 

Solution:

There is a new attribute in ASP.NET 4, ClientIDMode to solve this problem, Especially, Static and Predicable modes

http://msdn.microsoft.com/en-us/library/system.web.ui.control.clientidmode.aspx