function focusElement(elementId, select) {
    var element = document.getElementById(elementId);

    element.focus();
    if (select) {
        element.select();
    }
}

function focusAndSelectElement(elementId) {
    focusElement(elementId, true);
}

function focusElementOnLoad(elementId, select)
{
    window.onload = function() { focusElement(elementId, select); };
}

function focusAndSelectElementOnLoad(elementId)
{
    focusElementOnLoad(elementId, true);
}

function toggleDisplay(elementId) {
    var element = document.getElementById(elementId);
    var visible = isVisible(elementId);

    if (visible) {
        hide(elementId);
    } else {
        show(elementId);
    }
    return !visible;
}

function fadeToggleDisplay(elementId) {
    var visible = isVisible(elementId);

    toggleDisplay(elementId);
    return !visible;
}