window.onload = function () {
var img1 = document.getElementById('limg');
img1.style.visibility = "visible";
fadeIn('limg', 0);

var img2 = document.getElementById('rimg');
img2.style.visibility = "visible";
fadeIn('rimg', 0);
};

function fadeIn(imgId, opacity) {
if (opacity <= 100) {
setOpacity(document.getElementById(imgId), opacity);
opacity += 10;
window.setTimeout("fadeIn('" + imgId + "'," + opacity + ")", 80);
}
}
function setOpacity(img, opacity) {
img.style.filter = "alpha(opacity:" + opacity + ")";
img.style.MozOpacity = opacity / 100;
img.style.opacity = opacity / 100;
}