<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ru" lang="ru" dir="ltr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1251" />
<title>Активные темы</title>
</head>
<body>
<style id="Myzoom">
#div {
width:100px;
height:100px;
border:1px solid red;
zoom: 1;
}
</style>
<div id="div"></div>
<script type="text/javascript">
document.getElementById("div").style.zoom=3
</script>
</body>
</html>
в ИЕ >
http://s1.uploads.ru/i/cFSiV.png