.dialog_nw {
  background: transparent url(/images/window/pf/top_left.gif) no-repeat 0 0;
}

.dialog_n {
  background: transparent url(/images/window/pf/top_mid.gif) repeat-x 0 0;
}

.dialog_ne {
  background: transparent url(/images/window/pf/top_right.gif) no-repeat 0 0;
}

.dialog_close {
  background: transparent url(/images/window/pf/close.gif) no-repeat 0 0;
}