You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <allimages>
      <img name="BD_Primus_Osek.jpg" timestamp="2012-03-31T17:29:01Z" url="http://teplice.in/domains/teplice.in/images/5/51/BD_Primus_Osek.jpg" descriptionurl="http://teplice.in/Soubor:BD_Primus_Osek.jpg" ns="6" title="Soubor:BD Primus Osek.jpg" />
      <img name="BVGcz_Teplice_mapa.jpg" timestamp="2012-03-31T19:39:38Z" url="http://teplice.in/domains/teplice.in/images/c/c1/BVGcz_Teplice_mapa.jpg" descriptionurl="http://teplice.in/Soubor:BVGcz_Teplice_mapa.jpg" ns="6" title="Soubor:BVGcz Teplice mapa.jpg" />
      <img name="Bankomat_Ceske_sporitelny_Bilina_Interspar_mapa.jpg" timestamp="2011-05-18T07:23:12Z" url="http://teplice.in/domains/teplice.in/images/7/72/Bankomat_Ceske_sporitelny_Bilina_Interspar_mapa.jpg" descriptionurl="http://teplice.in/Soubor:Bankomat_Ceske_sporitelny_Bilina_Interspar_mapa.jpg" ns="6" title="Soubor:Bankomat Ceske sporitelny Bilina Interspar mapa.jpg" />
      <img name="Bankomat_Ceske_sporitelny_Dubi_Ruska_mapa.jpg" timestamp="2011-05-18T07:29:01Z" url="http://teplice.in/domains/teplice.in/images/e/e8/Bankomat_Ceske_sporitelny_Dubi_Ruska_mapa.jpg" descriptionurl="http://teplice.in/Soubor:Bankomat_Ceske_sporitelny_Dubi_Ruska_mapa.jpg" ns="6" title="Soubor:Bankomat Ceske sporitelny Dubi Ruska mapa.jpg" />
      <img name="Bankomat_Ceske_sporitelny_Duchcov_Osecka_mapa.jpg" timestamp="2011-05-18T07:34:19Z" url="http://teplice.in/domains/teplice.in/images/e/e3/Bankomat_Ceske_sporitelny_Duchcov_Osecka_mapa.jpg" descriptionurl="http://teplice.in/Soubor:Bankomat_Ceske_sporitelny_Duchcov_Osecka_mapa.jpg" ns="6" title="Soubor:Bankomat Ceske sporitelny Duchcov Osecka mapa.jpg" />
      <img name="Bankomat_Ceske_sporitelny_Osek_Rooseveltova_mapa.jpg" timestamp="2011-05-18T07:39:08Z" url="http://teplice.in/domains/teplice.in/images/1/1e/Bankomat_Ceske_sporitelny_Osek_Rooseveltova_mapa.jpg" descriptionurl="http://teplice.in/Soubor:Bankomat_Ceske_sporitelny_Osek_Rooseveltova_mapa.jpg" ns="6" title="Soubor:Bankomat Ceske sporitelny Osek Rooseveltova mapa.jpg" />
      <img name="Bankomat_Ceske_sporitelny_Teplice_Masarykova_109_mapa.jpg" timestamp="2011-05-18T07:55:31Z" url="http://teplice.in/domains/teplice.in/images/5/58/Bankomat_Ceske_sporitelny_Teplice_Masarykova_109_mapa.jpg" descriptionurl="http://teplice.in/Soubor:Bankomat_Ceske_sporitelny_Teplice_Masarykova_109_mapa.jpg" ns="6" title="Soubor:Bankomat Ceske sporitelny Teplice Masarykova 109 mapa.jpg" />
      <img name="Bankomat_Ceske_sporitelny_Teplice_Masarykova_1802_mapa.jpg" timestamp="2011-05-18T08:04:57Z" url="http://teplice.in/domains/teplice.in/images/0/03/Bankomat_Ceske_sporitelny_Teplice_Masarykova_1802_mapa.jpg" descriptionurl="http://teplice.in/Soubor:Bankomat_Ceske_sporitelny_Teplice_Masarykova_1802_mapa.jpg" ns="6" title="Soubor:Bankomat Ceske sporitelny Teplice Masarykova 1802 mapa.jpg" />
      <img name="Bankomat_Ceske_sporitelny_Teplice_Namesti_Svobody_mapa.jpg" timestamp="2011-05-18T07:46:21Z" url="http://teplice.in/domains/teplice.in/images/1/14/Bankomat_Ceske_sporitelny_Teplice_Namesti_Svobody_mapa.jpg" descriptionurl="http://teplice.in/Soubor:Bankomat_Ceske_sporitelny_Teplice_Namesti_Svobody_mapa.jpg" ns="6" title="Soubor:Bankomat Ceske sporitelny Teplice Namesti Svobody mapa.jpg" />
      <img name="Bankovni_institut_VS_Teplice.jpg" timestamp="2012-10-28T16:51:04Z" url="http://teplice.in/domains/teplice.in/images/1/1a/Bankovni_institut_VS_Teplice.jpg" descriptionurl="http://teplice.in/Soubor:Bankovni_institut_VS_Teplice.jpg" ns="6" title="Soubor:Bankovni institut VS Teplice.jpg" />
    </allimages>
  </query>
  <query-continue>
    <allimages aicontinue="Bata_Teplice.jpg" />
  </query-continue>
</api>