function show(obj)
{
	var theList = "list" + obj;
	var thehiddenList = "hiddenList" + obj;
	
	var list = document.getElementById(theList);
	var hiddenList = document.getElementById(thehiddenList);
	
	if(hiddenList.style.display == "none") 
	{
		hiddenList.style.display = '';
		list.style.background = "url('images/bgMenu2.jpg') no-repeat";
	}else{
		hiddenList.style.display = 'none';
		list.style.background = "url('images/bgMenu.jpg') no-repeat";
	}
}