function expandFirst() {
    document.getElementById(expandFirst.arguments[0]).style.display = "block";
    for (var i = 1; i < expandFirst.arguments.length; i++) {
        document.getElementById(expandFirst.arguments[i]).style.display = "none";
    }
}
function expandCollapse() {
    for (var i = 0; i < expandCollapse.arguments.length; i++) {
        var element = document.getElementById(expandCollapse.arguments[i]);
        element.style.display = (element.style.display == "none") ? "block" : "none";
    }
}