I have found in one of the forum discussion that Skin can be set from
the server only as it is set in the initial creation of the window
object. Here is the forum link.
answered on 20 Feb 2009, 08:03 AM
The skin is loaded and can be changed from the server only. For scenarios where you want to have more skins on the same page, I suggest to use standalone RadWindow controls with different skins and to open the corresponding window when needed by using $find() / show().