来自:http://www.cnblogs.com/luckbird/archive/2008/02/01/1061048.html
<a href="javascript:gets();">获取</a>
<textarea id="ttt"></textarea>
<script language="javascript">
function gets()
{
var t = document.getElementById("ttt");
t.value = document.documentElement.outerHTML;
} </script>