function fadeImage(imgname, opacity) {
        var img = document.getElementById(imgname);
        if(img) {
                img.style.MozOpacity = opacity;
                img.style.Opacity = opacity;
                img.style.filter = "alpha(opacity=" + opacity*100 + ")";
        }
}

function changeImage(imgname, src) {
	var img = document.getElementById(imgname);
	img.src = src;
}