function SwitchMenu(obj)
{
	if(document.getElementById)
	{
	var el = document.getElementById(obj);
	var ar = document.getElementById("rozbal").getElementsByTagName("div");
		if (el.style.display == "none")
		{
			for (var i=0 ; i<ar.length; i++)
			{
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}
		else
		{
			el.style.display = "none";
		}
	}
}

function ChangeClass(menu, newClass) { 
	 if (document.getElementById) { 
	 	document.getElementById(menu).className = newClass;
	 } 
}