如何知道<li>元素相对于浏览器边界的绝对位置？
<html>
<body style="overflow: hidden">
<div ID="Ticker" style="position:absolute; white-space: nowrap;">
<ol style="list-style-type:decimal; ">
<li style="float: left; width: 100px; padding: 2px 0px;">Test</li>
<li style="float: left; width: 100px; padding: 2px 0px;">Test</li>
<li ID="TargetElem" style="float: left; width: 100px; padding: 2px 0px;">Test</li>
<li style="float: left; width: 100px; padding: 2px 0px;">Test</li>
<li style="float: left; width: 100px; padding: 2px 0px;">Test</li>
<li style="float: left; width: 100px; padding: 2px 0px;">Test</li>
<li style="float: left; width: 100px; padding: 2px 0px;">Test</li>
</ol>
</div>
<script type="text/javascript" src="ticker.js" language="javascript"></script>
</body>
</html> …