function aufklappen(id_name){
	id_unterpunkt = id_name+"_unterpunkt";
	document.getElementById(id_unterpunkt).style.display = "block";
	document.getElementById(id_name).href ="javascript: id_name2 = '"+id_name+"'; einklappen(id_name2);";
}

function einklappen(id_name){
	id_unterpunkt2 = id_name+"_unterpunkt";
	document.getElementById(id_unterpunkt).style.display = "none";
	document.getElementById(id_name).href ="javascript:id_name2 = '"+id_name+"'; aufklappen(id_name2);";

}