Forum:Trying to figure out collapse/hide code

Hi again, I am trying to figure out how to create a collapsing code for this page w:c:gaia:Monthly_Collectibles (14,150 bytes). Because the page is getting very long, so I want to minimize it by hiding each of the items under the years. Although I am still thinking about just splitting the years up to different pages, I did a poll to see what people prefer.

Is there a certain way the page has to be in order for a code to work? Bunai82 07:52, January 2, 2010 (UTC)