<HTML>
<HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!--
function loadDoc(URL)
{
document.getElementById('myFrame').src = URL;
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<TABLE WIDTH="75%" BORDER="1">
<TR>
<TD>blah</TD>
<TD>waffle</TD>
<TD>drone</TD>
</TR>
<TR>
<TD>Click <A HREF="javascript:loadDoc('[URL unfurl="true"]http://www.google.co.uk/');">here</A>[/URL] to load Google in the middle</TD>
<TD><IFRAME SRC="" ID="myFrame"></IFRAME></TD>
<TD>Click <A HREF="javascript:loadDoc('[URL unfurl="true"]http://www.yahoo.co.uk/');">here</A>[/URL] to load Yahoo! in the middle</TD>
</TR>
<TR>
<TD>123</TD>
<TD>456</TD>
<TD>789</TD>
</TR>
</TABLE>
</BODY>
</HTML>