frame.html
<frameset rows="50,*" cols="*">
<frame src="top.html" id="top" />
<frameset rows="*" cols="100,*">
<frame src="left.html" id="left" />
<frame src="right.html" id="right" />
</frameset>
</frameset>left.html
<input type="button" onclick="alert(parent.document.getElementById('right').src);" value="Press me">
<frameset rows="50,*" cols="*">
<frame src="top.html" id="top" />
<frameset rows="*" cols="100,*">
<frame src="left.html" id="left" />
<frame src="right.html" id="right" />
</frameset>
</frameset>left.html
<input type="button" onclick="alert(parent.document.getElementById('right').src);" value="Press me">
<frameset rows="130,*" cols="*" frameborder="no" border="0" framespacing="0">
<frame src="top.php" name="topFrame" scrolling="No" noresize="noresize" id="topFrame" title="topFrame" />
<frameset rows="*" cols="230,*" framespacing="0" frameborder="no" border="0">
<frame src="lift.php" name="leftFrame" id="leftFrame" title="leftFrame" />
<frame src="http://baidu.com/" name="mainFrame" id="mainFrame" title="mainFrame" />
</frameset>
</frameset>
lift。html:<script language=JavaScript>
function caiji()
{
alert(parent.frames.mainFrame.location.href);
}
</script>
<input name="btn" type="button" class="buttoncss" onclick="caiji()" value="采集">