function AchaPosicaoObjeto(obj) 
{
    var iLeft = iTop = 0;
	if (obj.offsetParent)
	{
		iLeft = obj.offsetLeft;
		iTop = obj.offsetTop;
		while (obj = obj.offsetParent)
		{
			iLeft += obj.offsetLeft;
			iTop += obj.offsetTop;
		}
	}
	return [iLeft,iTop];
}