Yes, of course. Look at the Fan Odyssey site in my sig for an example. You add the image to your stylesheet (includes/templates/YOUR_TEMPLATE/css/stylesheet.css). The sections below are from the stylesheet for the Fan Odyssey site.
Code:
/*wrappers - page or section containers*/
#mainWrapper {
background-color: #000000;
background-image: url('../images/space011.jpg'); text-align: left;
width: 100%;
vertical-align: top;
}
#headerWrapper, #contentMainWrapper, #logoWrapper, #cartBoxListWrapper, #ezPageBoxList, #cartBoxListWrapper ul, #ezPageBoxList ul, #mainWrapper, #popupAdditionalImage, #popupImage {
margin: 0em;
padding: 0em;
}
#logoWrapper{
background-image: url('../images/space011.jpg');
background-repeat: repeat-x;
background-color: #000000;
height:110px;
width: 100%;
}
Code:
#navMainWrapper, #navSuppWrapper, #navCatTabsWrapper {
margin: 0em;
background-color: #000000;
background-image: url('../images/space011.jpg'); padding: 0.5em 0.2em;
font-weight: bold;
color: #ffffff;
height: 1%;
width: 100%;
}
#navCatTabsWrapper {
background-color: #000000;
background-image: url('../images/space011.jpg'); color: #ffffff;
}
Code:
.centerBoxWrapper {
background-color: #000000;
background-image: url('../images/space011.jpg'); border: 1px solid #9a9a9a;
height: 1%;
margin: 1.1em 0;
}
Code:
.leftBoxContainer, .rightBoxContainer {
background-color: #000000;
background-image: url('../images/space011.jpg'); margin: 0em;
border: 1px solid #c0c0c0;
border-bottom: 5px solid #COCOCO;
margin-top: 0.5em;
}
.sideBoxContent {
background-color: #000000;
background-image: url('../images/space011.jpg'); padding: 0.4em;
}