if (top == self){
var fs =
'<frameset border="0" frameborder="no" framespacing="0" rows="22,*,100">'+
'<frame name="menu_boven" noresize scrolling="no" src="http://www.altrex.nl/export/menu_top.html">'+
'<frameset border="0" cols="180,*,70" frameborder="no" framespacing="0">'+
'<frame name="menu" noresize scrolling="no" src="http://www.altrex.nl/export/menu.html">'+
'<frame name="hoofd" noresize src="">'+
'<frame name="rechts" noresize scrolling="no" src="http://www.altrex.nl/export/rechts.html">'+
'</frameset>'+
'<frame name="onder" noresize scrolling="no" src="http://www.altrex.nl/export/onder.html">'+
'</frameset>';
document.write(fs);
frames['hoofd'].location.href = self.location.href;
}