\documentstyle{standard}

\outputon
\nobody
\begin{javascript}[\pct]
var callingURL = document.URL;
var frame1 = callingURL.substring(callingURL.indexOf('?')+1,
				 callingURL.lastIndexOf('?'));
var frame2 = callingURL.substring(callingURL.lastIndexOf('?')+1,
				 callingURL.length);

document.writeln('<frameset rows="70\pct,30\pct">');
document.writeln('<frame name="mainframe" src="'+frame1+'">');
document.writeln('<frame name="mainframe" src="'+frame2+'">');
document.writeln('</frameset>');
\end{javascript}
\outputoff
\begin{document}
\end{document}