var old;
var memold;
// nächstes war auskommentiert

if(document.layers)
{
	window.captureEvents(Event.CLICK);
	window.onclick=do_out;
} else
{
	document.onclick=do_out;
}

function show_layer(x)
{
	if(document.layers)
		document.layers[x].visibility="show";
	else
		document.all[x].style.visibility="visible";
}

function hide_layer(x)
{
	if(document.layers)
		document.layers[x].visibility="hide";
	else
		document.all[x].style.visibility="hidden";
}

function do_menu(x)
{
//alert(x);
	if(!old)
		old=memold;

	if(old!=x)
	{
		show_layer(x);
		old=x;
	} else
		old="";
}

function do_check(x)
{
	if(old && old!=x)
	{
		hide_layer(old);
		show_layer(x);
		old=x;
	}
}

function do_out()
{
	if(old)
		hide_layer(old);

	memold=old;
	old="";
}