function changeTab(tabID){
    document.getElementById('destTab').className = "";
    document.getElementById('hotelsTab').className = "";

    document.getElementById('destTabMenu').style.display = "none";
    document.getElementById('hotelsTabMenu').style.display = "none";

    document.getElementById(tabID).className = "locked";
    document.getElementById(tabID+'Menu').style.display = "block";
}