function toggle(id){
	var ahref = 'toggle_' + id;
	if (document.getElementById(id).style.display == 'none') {
		document.getElementById(id).style.display = 'block';
		document.getElementById(ahref).className  = 'toggle_button_auf';
	} else {
		document.getElementById(id).style.display = 'none';
		document.getElementById(ahref).className  = 'toggle_button_zu';
	}
}

function help(anchor) {
	var adresse = 'hilfe.html#' + anchor;
	window.open(adresse, 'Hilfe','width=650,height=800,resizable=no,scrollbars=yes');
}