Identification of external tracking / dysplaying codes

The most important assumption for correct work with external codes is to be able to identify each particular code. Tracking/displaying codes are usually identified according to their domain. Sources of codes´ scripts or 1x1 pixel images refers to that domain.

For example:

<script language="javascript" src="http://track.adform.net/adfscript/?bn=1927570"></script>

   Adform domain = external code comes from Adform system.

    <IMG SRC="http://ad.doubleclick.net/ddm/trackimp/N8893.140742ELLE.CZ/B8344373.112756156;dc_trk_aid=285859084;dc_trk_cid=60127039;ord=[timestamp]?" BORDER="0" HEIGHT="1" WIDTH="1" ALT="Advertisement">

  Doubleclick domain = external code comes from Doubleclick system.

 <script language="javascript1.2" type="text/javascript">
    //<![CDATA[
    _gde_wppeqlmoyw = new Image(1,1);
    _gde_wppeqlmoyw.src='http://gdecz.hit.gemius.pl/_'+(new Date()).getTime()+'/redot.gif?id=dv0wq0sRi9Dg3_eIvoUk6OTkLT.puCdchJMYk5cxikb.E7/fastid=blysqroauavetjkolnpqkdbrcglg/stparam=wppeqlmoyw';
    if (typeof(_gde_inscreen_dwell) == 'undefined')
    _gde_inscreen_dwell={};
    _gde_inscreen_dwell['_gde_isndwl_tahldjgtpr']='http://gdecz.hit.gemius.pl/_[TIMESTAMP]/redot.gif?id=dv0wq0sRi9Dg3_eIvoUk6OTkLT.puCdchJMYk5cxikb.E7/stparam=tahldjgtpr';
    document.write('<i style="display: none !important; visibility: hidden !important" id="_gde_isndwl_tahldjgtpr"><\/i>');
    document.write('<scr'+'ipt language="javascript1.2" type="text/javascript" src="http://gdecz.hit.gemius.pl/gdeinscreen.js"><\/scr'+'ipt>');
    //]]>
    </script>

    Gemius.pl domain = external code comes from Gemius system.

And another possible versions...