Puoi fare cosi....

codice:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Untitled</title>
<script language="JavaScript" type="text/javascript">
<!--
function ingrandisci(anImage) {
 html = '[img]'+anImage.src+'[/img]'
 document.getElementById('container').innerHTML = html;
} // function ingrandisci(anImage)
//-->
</script>

</head>
<body>
<DIV>
[img]image1.png[/img]
[img]image2.png[/img]
[img]image3.png[/img]
</div>
<div id="container">

</div>
</body>
</html>