[Amphiluke]

.img {
    position: absolute;
    left: 500px;
    top: 250px;
}

for (var i = 99; i > -1; i--) {
    document.write("<img src='zr.gif' class='img img"+i+"' id='img"+i+"' width='" + (i * 10) + "' height='" + (i * 10) + "'>");
}