@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain(google.com),
               domain(google.de)  {

/* ::: logo on google front page ::: */

  img[src*="images/hp0.gif"],
  img[src*="/images/logo.gif"] {
    width: 0 !important;
    padding-left: 400px !important;  /* change to the width of your image */
    height:         0px !important;  /* change to the height of your image */
    background-image: url(YOUR IMAGE HERE) !important;
    background-position: center center;
    background-repeat: no-repeat;
  }

/* ::: logo on google IMAGES front page ::: */

  img[src*="/images/images_hp.gif"] {
    width: 0 !important;
    padding-left: 400px !important;  /* change to the width of your image */
    height:         0px !important;  /* change to the height of your image */
    background-image: url(YOUR IMAGE HERE) !important;
    background-position: center center;
    background-repeat: no-repeat;
  }

/* ::: remove other logo parts, only needed for non-english google ::: */

  img[src*="images/hp1.gif"],
  img[src*="images/hp2.gif"],
  img[src*="images/hp3.gif"],
  td[valign="top"][class="h"] { display: none !important }

}

@-moz-document domain(images.google.de),
               domain(images.google.com)  {

/* ::: logo on google IMAGES search results ::: */

  img[src*="/images/images_res.gif"] {
    width: 0 !important;
    padding-left: 170px !important;  /* change to the width of your image */
    background-image: url(YOUR IMAGE HERE) !important;
    background-position: center center;
    background-repeat: no-repeat;
  }
tr > td[align=right]:first-child { display: none !important} 
}

@-moz-document url-prefix(http://www.google.de/search),
               url-prefix(http://www.google.com/search)  {

/* ::: logo on google search results ::: */

  img[src*="_res.gif"],
  img[src*="logo_sm.gif"] {
    width: 0 !important;
    padding-left: 170px !important;  /* change to the width of your image */
    padding-top:  0px !important;
    background-image: url(YOUR IMAGE HERE) !important;
    background-position: center center;
    background-repeat: no-repeat;
  }
tr > td[align=right]:first-child { display: none !important } 
}