// handler for dragging control panel divs over iframe
if (document.all) document.attachEvent("onmousemove", tracker);
else document.addEventListener("mousemove", tracker, true);

var TrackerBusy = false;
function tracker(e)
{
    if (parent.ob)
    {
        TrackerBusy = true;
	parent.MM(e);
        return false;
    }
    else
    {
        TrackerBusy = false;
    }
}