function openClose(el) {
	test = false;
	document.getElementById('haupt[1]').style.display="none";
	document.getElementById('haupt[2]').style.display="none";
	document.getElementById('haupt[3]').style.display="none";
	document.getElementById('haupt[4]').style.display="none";
	
	if ( test == false ) {
		el.style.display ="block";
		test = true;
	} else {
		el.style.display ="none";
		test = false;
	}
	
}