var id;

function swap(o)
{
    id = o.id.substr(4,o.id.length-4);
    document.getElementById("dot-" + id).style.display="block";
    document.getElementById("lbl-" + id).className = "label-over";
    o.onmouseout = unswap;
}

function unswap()
{
    document.getElementById("dot-" + id).style.display="none";
    document.getElementById("lbl-" + id).className = "label";
    id = "";
}