if (parent == self){
var fs =
'<frameset rows="80,*" frameborder="nl" border="0" framespacing="0">'+
'<frame name="topFrame" scrolling="no" noresize src="http://www.bick.nl/tpo.htm" >'+
'<frame name="mainFrame" src="">'+
'</frameset>'+
'<noframes>'+
'</noframes>';
document.write(fs);
frames['mainFrame'].location.href = self.location.href;
}