function lightup(imageobject, opacity){
    if (navigator.appName.indexOf("Netscape")!=-1&&parseInt(navigator.appVersion)>=5)
    imageobject.style.MozOpacity=opacity/100
    else if (navigator.appName.indexOf("Microsoft")!=-1&&parseInt(navigator.appVersion)>=4)
imageobject.filters.alpha.opacity=opacity;
ImageObj.style.filters.alpha.opacity=50;
ImageObj.style.MozOpacity=0.5;
}