<body>
<img src="blank.bmp" name="a">
<img src="blank.bmp" name="b">
<img src="blank.bmp" name="c">
</body>
<script>
<!--
onload = loadImages;
function loadImages() {
a.src = "yourimage.jpg";
b.src = "anotherimage.jpg";
c.src = "finalimage.jpg";
}
//-->
</script>