Как сменить тут фон?
body {
background: #333535 url("{style_images_url}/backgroundCover.png") repeat;
background-image: -moz-linear-gradient(top, rgba(23,23,23,0.8) 0%, rgba(23,23,23,0.8) 100%);
background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(23,23,23,0.8)), color-stop(100%,rgba(23,23,23,0.8)));
background-image: -webkit-linear-gradient(top, rgba(23,23,23,0.8) 0%,rgba(23,23,23,0.8) 100%);
background-image: -o-linear-gradient(top, rgba(23,23,23,0.8) 0%,rgba(23,23,23,0.8) 100%);
background-image: -ms-linear-gradient(top, rgba(23,23,23,0.8) 0%,rgba(23,23,23,0.8) 100%);
background-image: linear-gradient(to bottom, rgba(23,23,23,0.8) 0%,rgba(23,23,23,0.8) 100%);
color: #5a5a5a;
font: normal 11px tahoma, helvetica, arial, sans-serif;
position: relative;
}
В background: скармливаю свою картинку, но никаких изменений нет