function showPic (whichpic)
{
    if (document.getElementById)
    {
        document.getElementById('placeholder').src = whichpic.href;
        return false;
    }
    else
    {
        return true;
    }
}

function showPicExt (whichpic, placeholder)
{
    if (document.getElementById)
    {
        document.getElementById(placeholder).src = whichpic.href;
        return false;
    }
    else
    {
        return true;
    }
}