function maxHeight(e) {
    e.style.height="auto";
}

function expandOrCollapse(aButton, list, newHeight) {
    var e=document.getElementById(list);
    if (aButton.value=="Expand") {
        newHeight = e.style.height;
        aButton.value="Collapse";
        maxHeight(e);

    } else {
        aButton.value="Expand";
        restoreHeight(e, newHeight);
    }
}

function restoreHeight(e, newHeight) {
    e.style.height=newHeight;
}