if (top == self){
var fs =
'<frameset rows="106,*" frameborder="NO" border="0" framespacing="0"> '+
'<frame name="topFrame" scrolling="NO" noresize src="http://www.derooy-kunststoffen.com/top.html" >'+
'<frameset cols="139,*" frameborder="NO" border="0" framespacing="0">'+
'<frame name="leftFrame" scrolling="NO" noresize src="http://www.derooy-kunststoffen.com/menu.html">'+
'<frame name="mainFrame" src="">'+
'</frameset>'+
'</frameset>';
document.write(fs);
frames['mainFrame'].location.href = self.location.href;
}