// functions nav
home_of = new Image();
home_of.src = "/img/global/nav/home_of.gif";
home_on = new Image();
home_on.src = "/img/global/nav/home_on.gif";

company_of = new Image();
company_of.src = "/img/global/nav/company_of.gif";
company_on = new Image();
company_on.src = "/img/global/nav/company_on.gif";

activities_of = new Image();
activities_of.src = "/img/global/nav/activities_of.gif";
activities_on = new Image();
activities_on.src = "/img/global/nav/activities_on.gif";

portagency_of = new Image();
portagency_of.src = "/img/global/nav/port_agency_of.gif";
portagency_on = new Image();
portagency_on.src = "/img/global/nav/port_agency_on.gif";

fleet_of = new Image();
fleet_of.src = "/img/global/nav/fleet_of.gif";
fleet_on = new Image();
fleet_on.src = "/img/global/nav/fleet_on.gif";

jobs_of = new Image();
jobs_of.src = "/img/global/nav/jobs_of.gif";
jobs_on = new Image();
jobs_on.src = "/img/global/nav/jobs_on.gif";

contact_of = new Image();
contact_of.src = "/img/global/nav/contact_of.gif";
contact_on = new Image();
contact_on.src = "/img/global/nav/contact_on.gif";

top_aktuell = '';

function nav_over(arg) {
	if (arg != top_aktuell) { image = document.images[arg]; image.src = eval(arg+'_on.src'); }
}

function nav_out(arg) {
	if (arg != top_aktuell) { image = document.images[arg]; image.src = eval(arg+'_of.src'); }
}

function nav_hilite(arg) {
	if (arg != top_aktuell) {
		if (top_aktuell != '') {
			image = document.images[top_aktuell];
			image.src = eval(top_aktuell+'_of.src');
		}
		nav_over(arg);
		top_aktuell = arg;
	}
}