function closeAll() {
		for(i=0; i<5; i++) {
			var elecnt=i+1;
			var cls = document.getElementById('menu_block'+elecnt);
			cls.className='tcnav_Closed';
			var acls = document.getElementById('menu_arrow'+elecnt);
			if(acls.className!='menuhead_none') {
				acls.className='menuhead2_Closed';
			}	
		}
	}
	
	function ShowLegend(block1,elements) {
					LegendCloseAll(elements)
					var el = document.getElementById('legend_block'+block1);
					el.className = (el.className == 'lenav_Opened') ? 'lenav_Closed' : 'lenav_Opened';
	}
	
	function LegendCloseAll(elements) {
		for(i=0; i<elements; i++) {
			var elecnt=i+1;
			var cls = document.getElementById('legend_block'+elecnt);
			
			cls.className='lenav_Closed';
		}
	}
	
	function ToggleVisible(block1) {
					closeAll()
					var el = document.getElementById('menu_block'+block1);
					el.className = (el.className == 'tcnav_Opened') ? 'tcnav_Closed' : 'tcnav_Opened';
					var ael = document.getElementById('menu_arrow'+block1);
					ael.className = (ael.className == 'menuhead2_Open') ? 'menuhead2_Closed' : 'menuhead2_Open';
	}	
	
	function elementReload(block) {
					var init1 = document.getElementById('menu_block'+block);             
					var ainit1 = document.getElementById('menu_arrow'+block);             
					init1.className='tcnav_Open';
					ainit1.className='menuhead2_Open';
	}
	
	// Registrierung im Online Shop - Abfrage
	
	function validateAGBs() { //v4.0
	  var error=false;
	  if (document.reg_form2.AGB.checked == false) {
	  error=true;
	  }
	  if (error) alert('Bitte akzeptieren Sie die AGB,\nbevor Sie fortfahren!');
	  document.AGBreturnValue = (error == '');
	}