function show_layer(type) {
	if(type=='news') {
		document.getElementById('veranstaltungen_div').style.display = 'none';
		document.getElementById('news_div').style.display = 'block';
		document.getElementById('schwarzes_brett_1').style.display = 'block';
		document.getElementById('schwarzes_brett_2').style.display = 'none';
		
		document.getElementById('right_box_header_1').className = 'inactive';
		document.getElementById('right_box_header_2').className = '';
	}
	else if(type=='schwarzes_brett') {
		document.getElementById('veranstaltungen_div').style.display = 'none';
		document.getElementById('news_div').style.display = 'none';
		document.getElementById('schwarzes_brett_1').style.display = 'none';
		document.getElementById('schwarzes_brett_2').style.display = 'block';
	}
	else {
		document.getElementById('veranstaltungen_div').style.display = 'block';
		document.getElementById('news_div').style.display = 'none';
		document.getElementById('schwarzes_brett_1').style.display = 'block';
		document.getElementById('schwarzes_brett_2').style.display = 'none';
		
		document.getElementById('right_box_header_1').className = '';
		document.getElementById('right_box_header_2').className = 'inactive';
	}
	
	xajax_session_right_box(type);
}