I want to use jQuery blockUI but on their site they have not given what js to include, what css to use. Can sombody please give me a example with complete js and css included to show how to use jQuery blockUI.
All you need to do is loading the BlockUI script after including jQuery. It does not need any CSS to work.
See this fiddle for a most simple demo: http://jsfiddle.net/ThiefMaster/4FhHK/