/*
var dom = document.getElementById ? true : false;
var nn4 = document.layers ? true : false;
var ie4 = document.all ? true : false;


if (ie4) {
	var layerRef = document.all[layerName].style;
} else if (nn4) {
	var layerRef = document[layerName];
} else if (dom) {
	var layerRef = document.getElementById(layerName).style;
}
*/

function getLayerRefMoveLayer(layerName) {
	var layerRef = (document.getElementById) ? document.getElementById(layerName).style : (document.all) ? document.all[layerName].style : (document.layers) ? document[layerName] : 0;
	return layerRef;
}


function moveLayer(layerName,x,y) { //moves layer to abs coords	
	if (x != null) getLayerRefMoveLayer(layerName).left = x;
	if (y != null) getLayerRefMoveLayer(layerName).top = y;
}


function moveLayerX(layerName,x) { //moves layer to abs x-coords
	if (x != null) getLayerRefMoveLayer(layerName).left = x;
}


function moveLayerY(layerName,y) { //moves layer to abs y-coords
	if (y != null) getLayerRefMoveLayer(layerName).top = y;
}