Tooltip in a combo box?

Ariston, Thank you for try help, but don't work. I want the same of Elvira wrote bellow: [quote="hag":2cky40ou]As usual you've been very helpful. The problem I have is on change a number of functions need to run. So I added the code you suggested it ran the functions as needed. Is there a way to put in the tool tip when the item is highlighted or moused over rather on change.[/quote:2cky40ou]