В /templates/mytorent/style/engine.css удалить
.highslide-controls .highslide-previous a:hover { background-position: 0 -30px }
.highslide-controls .highslide-play a:hover { background-position: -30px -30px }
.highslide-controls .highslide-pause a:hover { background-position: -60px -30px }
.highslide-controls .highslide-next a:hover { background-position: -90px -30px }
.highslide-controls .highslide-move a:hover { background-position: -120px -30px }
.highslide-controls .highslide-full-expand a:hover { background-position: -150px -30px }
.highslide-controls .highslide-close a:hover { background-position: -180px -30px }
это строки 394,397, 400,402,405,407,410
