I have css selectors like this on in my style.css:

.jimgMenu ul li.landscapes a {
    background: url(../images/landscapes.jpg) repeat scroll 0%;
}

What's the easiest way to enable the user to add background images to anchor links like the ones below?

front-page.php:

<div class="jimgMenu">
        <ul>
            <li class="landscapes"><a href="#nogo">Landscapes</a></li>
            <li class="people"><a href="#nogo">People</a></li>
            <li class="nature"><a href="#nogo">Nature</a></li>
            <li class="abstract"><a href="#nogo">Abstract</a></li>
            <li class="urban"><a href="#nogo">Urban</a></li>
            <li class="people2"><a href="#nogo">People</a></li>
          </ul>
    </div>

To illustrate:

.jimgMenu ul li.landscapes a {
    background: url(<add background image>) repeat scroll 0%;
}

What that code would look like?