<!--
	function swap_listing( header, div_id ) {
		var klappe = 'klappe_' + header;
		if (document.getElementById( div_id ).style.display == 'none') {
			document.getElementById( div_id ).style.display = '';
			document.getElementById( header ).className = klappe + '_auf';
		}
		else {
			document.getElementById( div_id ).style.display = 'none';
			document.getElementById( header ).className = klappe + '_zu';
		}
	}
-->