function SwitchDisplay(id)
{
    var id_tag = document.getElementById(id);
    
    if (id_tag != null)
    {   // id_tag is not null, proceed
    
        if (id_tag.style.display != "none")
        {   // id_tag is currently visible, hide it
            id_tag.style.display = "none";
        } else
        {   // id_tag is currently hidden, show it
            id_tag.style.display = "block";
        }
        return false;
    }    
}

function SwitchTableCellDisplay(id)
{
    var id_tag = document.getElementById(id);
    
    if (id_tag != null)
    {   // id_tag is not null, proceed
    
        if (id_tag.style.display != "none")
        {   // id_tag is currently visible, hide it
            id_tag.style.display = "none";
        } else
        {   // id_tag is currently hidden, show it            
            id_tag.style.display = "block";
        }
        return false;
    }    
}

function ShowDiv(id)
{
    var id_tag = document.getElementById(id);
    if (id_tag != null)
    {
        id_tag.style.display = "inline";
    }
}

function HideDiv(id)
{
    var id_tag = document.getElementById(id);
    
    if (id_tag != null)
    {
        id_tag.style.display = "none";
    }
}

function cancel_postback()
{
    
}