proba a ver si asi te funciona
<body>
<script type="text/javascript">
<!--
document.write('<div style="margin-top: 6px">');
document.write('<a href="javascript
:cerrar();"><input type="submit" class="button" value="CERRAR" accesskey="s" style="font-family: Verdana; font-size: 8 pt; color: #0000FF" /></a>');
document.write('</div>');
//-->
</script>
</body>