function getLeft(refObj) {
	var xPos = refObj.offsetLeft;
	var parentObj=refObj.offsetParent;
	while(parentObj != null) {xPos+=parentObj.offsetLeft;parentObj=parentObj.offsetParent}
	return xPos;
}

function getTop(refObj) {
	var yPos = refObj.offsetTop;
	var parentObj=refObj.offsetParent;
	while(parentObj != null) {yPos+=parentObj.offsetTop;parentObj=parentObj.offsetParent}
	return yPos;
}
   
function leftPos(refName) {
	var ref=document.images[refName];
	return (document.layers)? ref.x : getLeft(ref);
}

function topPos(refName) {
	var ref=document.images[refName];
	return (document.layers)? ref.y : getTop(ref);
}