//creation labels
    var labeltemp = document.createElement("Label");
    labeltemp.style.left = x2-10;
    labeltemp.style.top = y2+5;
    labeltemp.style.position='absolute';

    var number = document.createTextNode(number);
    labeltemp.appendChild(number);

    document.body.appendChild(labeltemp);

labeltemp.style.left = x2-10 + "px";
labeltemp.style.top = y2+5 + "px";