Please anyone has confirm message box with yes No buttons in it for asp.net page

Please i am looking for a javascript code to use with confirm message box with two buttons Yes and NO in it.

Thank you very much.How about 'OK' and 'Cancel'?

if that's ok - check out :
http://aspnet101.com/aspnet101/aspnet/codesample.aspx?code=confirm
Hello David,
Thank's a lot, I will try the messagebox code.