Admin Forum:How can I add a working show/hide button on my infobox template?

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I want to add a show/hide button to Template:Character Info to show or hide the other info below the caption section (age, gender, etc.) How do you do it? MissingNo. here! Talk with me! 19:12, February 26, 2012 (UTC)
 * See ShowHide at Dev Wiki. --  Plasma  ( Talk )  @Community Central   19:15, February 26, 2012 (UTC)