n0 = true
    n1 = false;

    var p = document.location.pathname;
	var path = "/06_frankfurt/02"
    if(p.substr(0,path.length) == path) {
	n0 = false;
	n1 = true;
    }

    function showMain()
    {
	dhtml.getElementById('nav0').style.zIndex = 100;
	dhtml.getElementById('nav1').style.zIndex = 0;
	dhtml.visible('nav0', n0);
	dhtml.visible('nav1', n1);
    }

    function showActivities() 
    {
	dhtml.getElementById('nav0').style.zIndex = 0;
	dhtml.getElementById('nav1').style.zIndex = 100;
	dhtml.visible('nav0', false);
	dhtml.visible('nav1', true);
    }