function dropmenu(x) {
	if (navigator.appName == 'Microsoft Internet Explorer')
 	x.blur();
}

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";
}

var old;
var memold;
var subold;

	if(document.layers)
{
	window.captureEvents(Event.MOUSEDOWN);
	window.onmousedown=do_out;
}
	else
{
	document.onmouseup=do_out;
}
function do_menu(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;
}
	do_submenu();
}
	function do_out()
{
	if(old)
	hide_layer(old);
	memold=old; old="";
	do_submenu();
}
function do_submenu(x)
{
	if(subold)
{
	hide_layer(subold);
	subold="";
}
	if(x)
{
	show_layer(x);
	subold=x;
}
}
function lade(seite) {
	parent.pageFrame.location.href = seite;
}