function getLayer(path){
	if (document.layers) var layer = eval(path);
	else{
		var name = path.substring(path.lastIndexOf('.')+1);
		if (document.getElementById) var layer = document.getElementById(name);
		else var layer = document.all[name];
	}

	return layer;
};


function writeLayer(path,html){
	var layer = getLayer(path);

	if (document.layers) {
		layer.document.open();
		layer.document.write(html);
		layer.document.close();
	}
	else layer.innerHTML = html;
};


function setLayerVisible(path,bol){
	var layer = getLayer(path);
	if (document.layers) layer.visibility = (bol) ? 'show' : 'hide';
	else layer.style.visibility = (bol) ? 'visible' : 'hidden';
};

function changeLayerColor(lyr,color){
	var layer = getLayer('document.layers.avisoGif.layers.avisoFg.layers.'+lyr);

	if (document.layers) layer.bgColor = color;
	else layer.style.backgroundColor = color;
};

function writeLayer(lyr,content){
	var lyr = getLayer(lyr);
	if (document.layers){
		lyr.document.open();
		lyr.document.write(content);
		lyr.document.close();
	}
	else lyr.innerHTML = content;
};


function moveLayer(lyr,x,y) {
	var lyr = getLayer(lyr);
	if (document.layers) {
		if (x!=null) lyr.left = x;
		if (y!=null) lyr.top = y;
	} else {
		if (x!=null) lyr.style.left = x;
		if (y!=null) lyr.style.top = y;
	}
};