function hidediv(id)
{
    obj = document.getElementById(id);
    if (document.getElementById)
    {
        obj.style.display = "none";
    }
}

function showhide(id)
{
    if (document.getElementById)
    {
        obj = document.getElementById(id);
        if (obj.style.display == "none")
        {
            obj.style.display = "";
        } 
        else 
        {
            obj.style.display = "none";
        }
    }
}