// //////////////////
// rollover pictures

// closebutton highlight in sekundary-layer
function hiCloseButton(layerName, imgName) {
        changeImgSrc(imgHiClose.src, layerName, imgName);
}

// closebutton low in sekundary-layer
function loCloseButton(layerName, imgName) {
        changeImgSrc(imgClose.src, layerName, imgName);
}

function changeImgSrc(imgSrc,layName,imgName) {
	if (client.isNS4) { 
		lay = eval(doc + layName);
		lay.document[imgName].src = imgSrc;
	} else {
		document.images[imgName].src = imgSrc;
	} 
}