Framesets

I'm trying to compile a document that contains a frameset, like this:

	<frameset rows="*" cols="300, *" frameborder="yes" border="1" bordercolor="#000000">
		<frameset rows="50%, 50%" cols="*" frameborder="yes" border="1" bordercolor="#000000">
			<frame name="sites" src="sites.html"/>
			<frame name="items" src="items.html"/>
		</frameset>
		<frame name="maindisplay" src="main.html"/>
	</frameset>

When I stream the compiled class to the browser, I get this:

	<frameset rows="*" cols="300, *" frameborder="yes" border="1" bordercolor="#000000">
		<frameset rows="50%, 50%" cols="*" frameborder="yes" border="1" bordercolor="#000000">
			<frame name="sites" src="sites.html"/>
			<frame name="items" src="items.html"/>
			<frame name="maindisplay" src="main.html"/>
		</frameset>
	</frameset>

Of course, putting the third frame inside the first frameset isn't what I want. Is there any way to get around this?