//Code fuer die Navigationsleiste
var last_container = "";
var last_container2 = "";
function show(container)
{
	document.getElementById(container).style.display = "block";
	if (last_container != "")
	{
		hide();
	}
	if (last_container == container)
	{
		last_container = "";
	}
	else
	{
		last_container = container;
	}
}

function hide()
{
	document.getElementById(last_container).style.display = "none";
}
			
function setBG(container, image)
{
	document.getElementById(container).style.background = "url('img/css/menu" + image + ".bmp')";
	if (last_container2 != "")
	{
		document.getElementById(last_container2).style.background = "";
	}
	last_container2 = container;
}