function showtooltip(event, headline, text)
{
    var pv_x, pv_y;

    pv_x = tt_EvX(event);
    pv_y = tt_EvY(event);

    //alert("event at " + pv_x + ", " + pv_y);
    tt_go(event, headline, text, pv_x, pv_y);
}

function hidetooltip()
{
	tt_Hide();
}

function overlib(text)
{
	headline ='tooltipdiv'
    var pv_x, pv_y;

    pv_x = tt_EvX(event);
    pv_y = tt_EvY(event);

    //alert("event at " + pv_x + ", " + pv_y);
    tt_go(event, headline, text, pv_x, pv_y);
}

function nd()
{
	tt_Hide();
}