var mySlide = new Fx.Slide('level1');
  mySlide.hide();
  $('toggle').addEvent('click', function(e){
  	   var plus= document.getElementById('plus');
  	   if (plus.src == 'http://www.team-in-medias.de/fileadmin/template/images/mainmenu.png')
	   {plus.src = '/fileadmin/template/images/mainmenu_minus.png'; startY = 487; }
	   else{plus.src = '/fileadmin/template/images/mainmenu.png'; startY = 300;}
	   e = new Event(e);
	   mySlide.toggle();
	   e.stop();
  });