[%# You should use this template in a WRAPPER directive. Template component for clickable headings which reveal/hide their content. Designed to be used as a wrapper around the content to be toggled into/out of view. Requires a javascript function called show_or_hide to be in scope to do the work. Expects these parameters: label - The link text shown to the user element_under_control - div id of the content to reveal or hide %]