div.sideblock div.header div.bt  div {
  background-position: 100% 0;
  right: -13px;
}
div.sideblock div.header div.bt {
  background-position: 0 0;
  left: -13px;
  margin: 0 13px 0 0;
}
+div.sideblock div.bt  div {
  background-position: 100% 0;
  right: -13px;
}
div.sideblock div.bt {
  background-position: 0 0;
  left: -13px;
  margin: 0 13px 0 0;
}
div.sideblock div.bb  div {
  background-position: 100% 100%;
  right: -13px;
}
div.sideblock div.bb {
  background-position: 0 100%;
  left: -13px;
  margin: 0 13px 0 0;
}
td#middle-column div.bt  div {
  background-position: 100% 0;
  right: -13px;
}
td#middle-column div.bt {
  background-position: 0 0;
  left: -13px;
  margin: 0 13px 0 0;
}
td#middle-column div.bb  div {
  background-position: 100% 100%;
  right: -13px;
}
td#middle-column div.bb {
  background-position: 0 100%;
  left: -13px;
  margin: 0 13px 0 0;
}
div#footer div.bt  div {
  background-position: 100% 0;
  right: -13px;
}
div#footer div.bt {
  background-position: 0 0;
  left: -13px;
  margin: 0 13px 0 0;
  text-align: right;
}
div#footer div.bb  div {
  background-position: 100% 100%;
  right: -13px;
}
div#footer div.bb {
  background-position: 0 100%;
  left: -13px;
  margin: 0 13px 0 0;
  text-align: right;
}
div#header div.bt div {
  background-position: 100% 0;
  right: -13px;
}
div#header div.bt {
  background-position: 0 0;
  left: -13px;
  margin: 0 13px 0 0;
}
div#header div.bb  div {
  background-position: 100% 100%;
  right: -13px;
}
div#header div.bb {
  background-position: 0 100%;
  left: -13px;
  margin: 0 13px 0 0;
}
div#header-home div.bt  div {
  background-position: 100% 0;
  right: -13px;
}
div#header-home div.bt {
  background-position: 0 0;
  left: -13px;
  margin: 0 13px 0 0;
}
div#header-home div.bb  div {
  background-position: 100% 100%;
  right: -13px;
}
div#header-home div.bb {
  background-position: 0 100%;
  left: -13px;
  margin: 0 13px 0 0;
}
body.nocoursepage div#content div.bt  div {
  background-position: 100% 0;
  right: -13px;
}
body.nocoursepage div#content div.bt {
  background-position: 0 0;
  left: -13px;
  margin: 0 13px 0 0;
}
body.nocoursepage div#content div.bb  div {
  background-position: 100% 100%;
  right: -13px;
}
body.nocoursepage div#content div.bb {
  background-position: 0 100%;
  left: -13px;
  margin: 0 13px 0 0;
}
