Peter Brunone (EasyListBox.com) asked: >>Ron, wouldn't those be OPTGROUP tags? Hi Peter, I absolutely agree that OPTGROUP is a much more elegant Route. Especially because it blocks selection of the 'invalid' values. E.g. http://www.w3schools.com/tags/tag_optgroup.asp But I have seen sites that approximated that functionality by using values offset by special characters like '*' or set in different colors. I'm not advocating it - just noting that it exists in 'the wild.' >>Also, your example looks strangely reminiscent of http://easylistbox.com/demoDataGrid.aspx :-D Heh! Cute! Obviously a fine resource! ;-) RonL.