var celogopos = document.getElementById('celogohere');

celogopos.innerHTML = celogopos.innerHTML + "\
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<a href=\"https://www.ehandelscertifiering.se/rapport.php?url=www.lannasport.se\" target=\"_blank\"><img \
src=\"https://www.ehandelscertifiering.se/logotyp_v4.php?url=www.lannasport.se&size=80x73&quad=yes&bg=white\" \
style=\"border:0px; width:80px;\" alt=\"\"></a>\
</div>\
";