Thanks for your reply. The issue with using the title attribute in IE is it is limited to 512 characters. There doesn't appear to be a limit in IE when I user toolTip_enable. So I would like to get toolTip_enable to work on each option in a shuttle item using IE. However it appears that the onmouseover event does not work on the option element in IE, so I am looking for a solution to get around this limitation.
Thanks in advance.