var lastParentID = 0;

function amvChangeMenu2(id){
var indexTreeArray=new Array('1');
for (i=0; i<indexTreeArray.length; i++){
var objClose=document.getElementById('id3Block'+indexTreeArray[i]);
	objClose.style.display='none';
}
var level=(id.length+1)/2;
for (i=0; i<level; i++){
var objOpen=document.getElementById('id3Block'+id.substr(0,id.length-i*2));
	objOpen.style.display='block';
}
}

//Collapse\Expands a given menu item
function changeMenu(id){
	
	objDaughter=document.getElementById('idBlock'+id);

	if (objDaughter.style.display=='none'){
		objDaughter.style.display='block';
	}else{
		if(objDaughter.style.display=='block'){
			objDaughter.style.display='none';
		}
	}
}

//Handles changing of parent level menu items
function changeMain(id)
{
	if(lastParentID != id)
	{
		if(lastParentID > 0) //Watch for default value
		{
			//Set old parent to be no longer active
			var objParent = document.getElementById('parentBlock'+lastParentID);
			objParent.className = 'level_1';
			
			//collapse menu
			changeMenu(lastParentID);
		}

		//Set new parent to be active
		var objParent = document.getElementById('parentBlock'+id);
		objParent.className = 'level_1_active';
		
		//expand menu
		changeMenu(id);
		
		//save new id
		lastParentID = id;
	}
	else
	{
		//Set old parent to be no longer active
		var objParent = document.getElementById('parentBlock'+id);
		objParent.className = 'level_1';
			
		//collapse menu
		changeMenu(id);
		
		//save new id
		lastParentID = 0;
	}
		
}