Disappearing ComboBox?

[COLOR=black][FONT=Arial]I know there are a lot of questions about comboBoxes and it seems no one knows how to explain them but I have a problem. I have a ComboBox that when I give it an instance name and I test it, It works (passes var to php) but the Labels disappear but if I remove the instance name they appear but don’t work.[/FONT][/COLOR]

[COLOR=black][FONT=Arial]If anyone can give me some insight on this problem it would be appreciated, I am under a deadline and am VERY quickly running out of time to solve this problem.[/FONT][/COLOR]