function changeState(elem) {
    var selectedIndex;
    var selectedItem;
    if (typeof(elem) == 'object') {
        selectedIndex = elem.selectedIndex;
        selectedItem = elem.options[selectedIndex].value;
    } else {
        selectedItem = elem;
    }

    var stateHolder = document.getElementById('stateHolder');
    var usStateHolder = document.getElementById('usStateHolder');
    var kyStateHolder = document.getElementById('kyStateHolder');
    var caStateHolder = document.getElementById('caStateHolder');

    switch (selectedItem) {
        case "US":
            stateHolder.style.display = "none";
            usStateHolder.style.display = "";
            kyStateHolder.style.display = "none";
            caStateHolder.style.display = "none";
            break;
        case "CA":
            stateHolder.style.display = "none";
            usStateHolder.style.display = "none";
            kyStateHolder.style.display = "none";
            caStateHolder.style.display = "";
            break;
        case "KY":
            stateHolder.style.display = "none";
            usStateHolder.style.display = "none";
            kyStateHolder.style.display = "";
            caStateHolder.style.display = "none";
            break;
        default:
            stateHolder.style.display = "";
            usStateHolder.style.display = "none";
            kyStateHolder.style.display = "none";
            caStateHolder.style.display = "none";
    }
}