function toggleSubMenuByName(layerName){
	
	
	
	
	theObjects = document.getElementsByTagName('div');
	for (var i=0; i < theObjects.length; i++){
		var elementName = theObjects[i].getAttribute("name")
		//show selected submenu
		if (elementName == layerName){
				if (theObjects[i].style.display == 'block'){
					theObjects[i].style.display = 'none';
					}else{
					theObjects[i].style.display = 'block';
				}
		}else{
				if (elementName != '' && elementName != null){
					if (elementName.substring(0,19) == "subMenuForMenuItem_"){
					//hide other subMenus
					theObjects[i].style.display = 'none';
					}
				}
		}
	}
}

function showSubMenuByName(layerName){
	theObjects = document.getElementsByTagName('div');
	for (var i=0; i < theObjects.length; i++){
		var elementName = theObjects[i].getAttribute("name")
		if (elementName == layerName){
				theObjects[i].style.display = 'block';
			}
		}
}