function toggleBoxState(obj) {

 var rv = false; // Return value assumes failure.
  if (navigator.appName == "Microsoft Internet Explorer")
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }

 if (navigator.appName == "Microsoft Internet Explorer" && rv <= "8") { 

	if ( obj.className != 'klapphead' ) {

		obj.className = 'klapphead'; 
		
		//var box = obj.nextSibling;
		var box = obj.nextSibling;

		box.style.display = 'block';
	

	}

	else {

		obj.className = 'klappheadmax';
	var box = obj.nextSibling;
	
		box.style.display = 'none';
	
	}
	
 } else {
	 
	if ( obj.className != 'klapphead' ) {

		obj.className = 'klapphead';
		var box = obj.nextSibling;
		var box2 = box.nextSibling;
		box2.style.display = 'block';
	

	}

	else {

		obj.className = 'klappheadmax';
		var box = obj.nextSibling;
		var box2 = box.nextSibling;
		box2.style.display = 'none';
	
	}
	 }

}