function close( el_name ) {
		document.getElementById( el_name ).style.display = "none";
	}
	
	function open( el_name ) {
		document.getElementById( el_name ).style.display = "block";
	}
	
	function closeDiv( el_name ) {
		close( el_name );
		//close( el_name+"_aus" );
		//open( el_name+"_an" );
	}
	
	function openDiv( el_name ) {
		open( el_name );
		//open( el_name+"_aus" );
		//close( el_name+"_an" );
	}
	
	function flip( el_name ) {
		el =  document.getElementById( el_name );
		
		closeAll();
		
		if ( el.style.display == "none" ) {
			openDiv( el_name );
		} else {
			closeDiv( el_name );
		}
	}
	
	function closeByName( el_name ) {
		el = document.getElementsByName( el_name );
		for (i=0; i<el.length; i++) { el[i].style.display = "none"; }
	}
	
	function openByName( el_name ) {
		el = document.getElementsByName( el_name );	
		el[0].style.display = "block";
		for (i=0; i<el.length; i++) { el[i].style.display = "block"; }
	}