There's a bug on IE 7 (Win-XP) on the example:
http:// developer.yahoo. com/ yui/ examples/ datatable/ dt_colshowhide_ source. html
Bug shows when pressing on the "Table Options" link and a Simple Dialog opens.
Don't know if this is just a bug on the Example or a Dialog one.
Other browser including IE6 works fine. Is it a known issue?