Quite frankly, this just feels "wrong". Is there a reason you're doing this?
:-) I was thinking the same thing, Dan. In fact, I'd be surprised if this works at all. "multiple" may be an attribute but I think the element "type" ("select-multiple") is the key to the actual gui component style used. If you absolutely must make this type of change in JavaScript then you're probably better off replacing the entire element with one of type select-multiple. Mike