plh = parent.location.href;
tail1 = plh.substring(plh.length-1);
tail2 = plh.substring(plh.length-11);
btw = "http://bergentango.no/";

if (plh.substring(0,btw.length) == btw)
{

if (tail1 != "/" && tail2 != "/index.html")
{
  document.write('<a href="' + btw + '" target="_top">');
  document.write('<img src="' + btw + 'btw/grafikk/btwlogo.gif"');
  document.write(' width=420 height=50 alt="Bergen Tango Web"');
  document.write(' border=0 align=bottom alt="Bergen Tango Web">');
  document.write(" " + btw);
  document.write('</a><br clear=all><br>');
}

}