<html>
<head>
<title>frame test</title>
</head>
<frameset cols="50%,*">
<frame src="about:blank" name="frame1">
<frameset rows="50%,*">
<frame src="about:blank" name="frame2">
<frame src="about:blank" name="frame3">
</frameset>
<noframes>
Please see by the browser corresponding to the frame.
</noframes>
</frameset>
</html>