function showSecondLevelMenu(id){
	//zuerst wrapper sichtbar machen
	var topmenusecondlevelposition = document.getElementById("topmenu-secondlevel-position");
	if (topmenusecondlevelposition != null){
		topmenusecondlevelposition.style.visibility = 'visible';
	}
	//versteckt alle divs, außer das zu anzeigende mit id=id
	for (var i = 0; i <= 6; i++){
		var menu = document.getElementById('second-level-menu-id-'+i);
		if (menu != null){
			if (i!=id){
				menu.style.display = 'none';
			}else{
				menu.style.display = 'block';
			}
		}
	}
	//Reiter aus Level 1 soll beim Gleiten über seinen Unterelementen weissen Hintergrund behalten -> class="selected"
	var menu = document.getElementById('first-level-menu-id-'+id);
	if (menu != null){
		menu.className = menu.className+' selected';
	}
	//muss ebenfalls berücksichtig und je nach dem verstekct oder angezeigt werden
	var menu = document.getElementById("second-level-menu-id-selected");
	if (menu != null){
		if (id!='selected'){
			menu.style.display = 'none';
		}else{
			menu.style.display = 'block';
		}
	}
	//der aktive Reiter maus Level 1 muss in den Normalzustand überführt werden (class="selected" entfernen)
	/*if (id!='selected'){
		var selectedli = document.getElementById("selectedli");
		if (selectedli != null){
			if (selectedli.className = 'firstli selected'){
				selectedli.className = 'firstli';
			}else{
				selectedli.className = '';
			}
		}
	}*/
}

//wird bei onmouseout ausgeführt
function getOriginalState(){
	//allen lis aus Level 1, die ein selected bekommen haben, wird es wieder entzogen
	for (var i = 0; i <= 6; i++){
		var menu = document.getElementById('first-level-menu-id-'+i);
		if (menu != null){
			menu.className = menu.className.replace("selected", "");
		}
	}
	//alle divs außer dem selected-div verstecken
	for (var i = 0; i <= 6; i++){
		var menu = document.getElementById('second-level-menu-id-'+i);
		if (menu != null){
			menu.style.display = 'none';
		}
	}
	//selected-div anzeigen
	var menusel = document.getElementById("second-level-menu-id-selected");
	if (menusel != null){
			menusel.style.display = 'block';
			var topmenusecondlevelposition = document.getElementById("topmenu-secondlevel-position");
			if (topmenusecondlevelposition != null){
				topmenusecondlevelposition.style.visibility = 'visible';
			}
	}else{
		var topmenusecondlevelposition = document.getElementById("topmenu-secondlevel-position");
		if (topmenusecondlevelposition != null){
			topmenusecondlevelposition.style.visibility = 'hidden';
		}		
	}
	//Reiter aus Level 1 in den selected-Zustand bringen
	/*var selectedli = document.getElementById("selectedli");
	if (selectedli != null){
		if (selectedli.className = 'firstli'){
			selectedli.className = 'firstli selected';
		}else{
			selectedli.className = 'selected';
		}
	}*/
}
//wird für den Reiter Forum verwendet, da er keine Unterelemente hat -> zeige leeres Level 2 - Div
function showEmptyMenu(){
	var topmenusecondlevelposition = document.getElementById("topmenu-secondlevel-position");
	if (topmenusecondlevelposition != null){
		topmenusecondlevelposition.style.visibility = 'hidden';
	}
	//alle divs verstecken
	for (var i = 0; i <= 6; i++){
		var menu = document.getElementById('second-level-menu-id-'+i);
		if (menu != null){
			menu.style.display = 'none';
		}
	}
	//selected-div verstecken
	var menu = document.getElementById("second-level-menu-id-selected");
	if (menu != null){
		menu.style.display = 'none';
	}
	//Reiter aus Level 1 in den Normalzustand
	/*var selectedli = document.getElementById("selectedli");
	if (selectedli != null){
		if (selectedli.className = 'firstli selected'){
			selectedli.className = 'firstli';
		}else{
			selectedli.className = '';
		}
	}*/
}