#pageHeader {
  background-image: url(../gfx/bgheader_informatik.gif);
  }
#pageHeader h2 {
  background-image: url(../gfx/bilder_oben/3.jpg);
  }
#explanation h2 {
  background-image: url(../gfx/head/head_q_informatik.gif);
}
#linkList ul ul a {
  background-image: url(../gfx/menu/menu_4x4_informatik.gif);
  }