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<script type="text/javascript">
function swap_content( div )
		{
		displayType = ( document.getElementById( div ).style.display == 'none' ) ? 'block' : 'none';
		document.getElementById( div ).style.display = displayType;
		}
</script>

<a href="#" onclick="swap_content('1'); return false;">Überschrift</a>
<div id="1" style="display: none;">Erscheinung</div>