function popuplegend(divid,obj) {
    $get(divid).style.display = 'block';
    var tmp = obj;
    var top = 0;
    var left = 0
    do {
        top += tmp.offsetTop;
        left += tmp.offsetLeft;
        tmp = tmp.offsetParent;
    } while (tmp != undefined);

    $get(divid).style.top = top + 'px';
    $get(divid).style.left = (left + 40) + 'px';
}

function removelegend(divid,obj) {
    $get(divid).style.display='none';
}