I found issue here in your forum and received an updated fix.

However, the sample fix has the grid name ("RadGrid1") hard-coded in the method "function OnClientHidden(sender, args)". In our code we need to use this for many grids; each with its own name. Please show me how to obtain the grid name generically; preferably from the arguments (sender, args).

Also in the example the checkbox isn't explicitly declared; I assume the code is using some implicit name. However, in our code the name of the checkbox is declared (see below my signature). Please show me how to change the code to use different checkbox names.