// JScript File
function showHrefTop()
{
    var scrollObj = document.getElementById("scroll");
    if (!scrollObj) { return; }
    var spanTopObj = document.getElementById("spanTop");
    if (!spanTopObj) { return; }

    if(scrollObj.offsetHeight < scrollObj.scrollHeight)
    {
        spanTopObj.style.visibility = "visible";
    }
    else
    {
        spanTopObj.style.visibility = "hidden";
    }
}