// get the true offset of anything on NS4, IE4/5 & NS6, even if it's in a table!
function xDef() {
  for(var i=0; i<arguments.length; ++i){if(typeof(arguments[i])=='undefined') return false;}
  return true;
}

function getAbsX(elt){
	return (elt.x)? elt.x : getAbsPos(elt,"Left");
}

function getAbsY(elt){
    return (elt.y)? elt.y : getAbsPos(elt,"Top"); 
}

function task(obj){
	top1 = getAbsX(obj);
	left1 = getAbsY(obj);
	alert("left "+left1+"  top "+top1);
}



function getAbsPos(elt,which) {
	iPos = 0;
	while (elt != null) {
		iPos += elt["offset" + which];
		elt = elt.offsetParent;
	}
	return iPos;
}