when i tried on IE 6, it's still functional
Infragistics NetAdvantage 2007 vol2 not compatible in IE8?
IE 8 is not a supported environment for NetAdvantage for ASP.NET 2007 Volume 2 since IE 8 didn't come along until much later. Some key dates:
The earliest release which supports IE 8 was a service pack for 2009 Volume 1, and all versions 2009 Volume 2 and later.
You can find information for all of our products' supported environments at:http://ko.infragistics.com/support/supported-environments.aspx