Rails - May 2006 - collection_select default

Hi,

I have a form where i have two drop down lists formed by using the 
collection_select helper.

I need the second list "selected" item to change depending on what was
selected in the first list. I am currently using an onChange ajax call 
when the first list is changed, but I cannot get the second lists 
default value to change.

I have read that if I set the @variable.attribute this will be the 
default selected item, but for some reason this only seems to work with 
select lists and not collection_select. Is there a way to make one of 
the items selected in the list?

Thanks,
Ryan Lundie

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