Javascript change labels with drop down menu

Ok. I have a form for bands to fill out to add an event to the database. It’s all working, but i need to work on the cosmetic stuff.

There are 3 types of events… Show, TV, and Interview.

What i need is when one of the types is selected, the label of all the other input boxes change to what fits the type. When i say label, i mean a div or something.

Im guess it would be something like…

If (dropdown.value == “Show”){
divlabel1.value ==“Cost of Show”}

or something. I suckat js, so yea…

If you dont get what im saying, then please tell me and ill ellaborate more.

Thanks for any help,
-Naaman