ubleclick.net/ad/mgh.bw.general/general;page=t0;t0=bottom1;sz=120x60;ord=1234567890" alt="" border="0" /></a>
</noscript>
</div>






<!-- BW Ad Code -->
<script language="JavaScript" type="text/javascript">
// <![CDATA[
if (!window.BW_adsys) {
	document.write('<scr' + 'ipt src="http://www.businessweek.com/common_scripts/BW_adsys.js" language="JavaScript" type="text/javascript"><\/scr' + 'ipt>');
}
// ]]>
</script>



<div class="ad">
<script language="JavaScript" type="text/javascript">
// <![CDATA[
if (!