function getLayerObject(name)
 {
 	if(document.layers)
 	{
 		return document.layers[name];
 	}
 	else
 	{
 		return document.getElementById(name).style;
 	}
 	
 	
 }

function showLayer(layerName)
{
	myLayer = getLayerObject(layerName);
	myLayer.visibility="visible";
 }
        
 function hideLayer(layerName){
       myLayer = getLayerObject(layerName);
	myLayer.visibility="hidden";
 }

function getYPos(layerName) {
    myLayer = getLayerObject(layerName);
	mbtop = myLayer.top;
	//Für IE das 'px' von der Pos.Angabe entfernen
	mbtop=parseInt(mbtop); if (isNaN(mbtop)) mbtop=0;
	return mbtop;
 }

function getXPos(layerName) {
    myLayer = getLayerObject(layerName);
	mbleft = myLayer.left;
	//Für IE das 'px' von der Pos.Angabe entfernen
	mbleft=parseInt(mbleft); if (isNaN(mbleft)) mbleft=0;
	return mbleft;
 }

function setXPos(layerName, xpos) {
    myLayer = getLayerObject(layerName);
	myLayer.left=xpos;
}

function setYPos(layerName, ypos) {
    myLayer = getLayerObject(layerName);
	myLayer.top=ypos;
}