var old_akt = "";
var old_akt_pic = "";

function switch_akt(id) {
    document.getElementById(id).className = "aktiv";
    document.getElementById(id+"_pic").src = "images/dot_aktiv.gif";
    if (old_akt != "" && old_akt != id) {
        document.getElementById(old_akt).className = "inaktiv";
        document.getElementById(old_akt_pic).src = "images/dot.gif";
    }
    old_akt = id;
    old_akt_pic = id+"_pic";
}

function setStart() {
    document.getElementById('lm').className = "aktiv";
    document.getElementById('lm_pic').src = "images/dot_aktiv.gif";
    
    parent.main.location.href = "http://www.vidado.com/booking/ibe_tt2/index.php?KID=675000&formular=4&agent=zyx";

    old_akt = 'lm';
    old_akt_pic = 'lm_pic';
}