var philosophie_on = new Image();
philosophie_on.src = "img/navi/philosophie_on.gif";
var philosophie_off = new Image();
philosophie_off.src = "img/navi/philosophie_off.gif";

var team_on = new Image();
team_on.src = "img/navi/team_on.gif";
var team_off = new Image();
team_off.src = "img/navi/team_off.gif";

var hrnamislo_on = new Image();
hrnamislo_on.src = "img/navi/hrnamislo_on.gif";
var hrnamislo_off = new Image();
hrnamislo_off.src = "img/navi/hrnamislo_off.gif";

var raeume_on = new Image();
raeume_on.src = "img/navi/raeume_on.gif";
var raeume_off = new Image();
raeume_off.src = "img/navi/raeume_off.gif";