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Hit-metering for ads (1)
<script type="text/javascript">
var r = Math.random();
var t = new Date();
document.write("<img width='109' height='52' src='http://ads.example.com/ad/foo/bar.gif?t=" + t.getTime() + ";r=" + r + "'>");
</script>
<noscript>
<img width="109" height="52" src= "http://ads.example.com/ad/foo/bar.gif?js=0">
</noscript>