Background image is not repeating the length of the page

The background image doesn’t repeat all the way down the page if there is a lot of content. Can someone recommend a fix?

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="ISO-8859-1">
    <meta http-equiv="content-language" content="en"/>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
    <title></title>
    <style type="text/css">
        body {
            background-color: #777;
            height: 100% !important;
            margin: 0px;
            padding: 0px;
            width: 100%;
        }
        html, body { height: 100%; }
        #wrapper {
            background: white url(http://www.hotelroanoke.com/bg=wrapper2.png) !important;
            background-repeat: repeat-y;
            height: 100% !important;
            margin: auto;
            min-height: 100% !important;
            padding: 0px 30px;
            width: 772px;
        }
        #content {
            background-color: white;
            padding: 16px 21px;
            width: 730px;
            float: left;
            margin: 0;
        }
    </style>
</head>
<body>
    <div id="wrapper">
        <div id="content">
            <img src="images/spacer.gif" width="1" height="5000" alt="" />
        </div>
    </div>
</body>
</html>

try this

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="content-language" content="en"/>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
    <title></title>
    <style type="text/css">
        body {
            background-color: #777;
            margin: 0;
            padding: 0;
        }
        #wrapper {
            background: white url(http://www.hotelroanoke.com/bg=wrapper2.png) !important;
            background-repeat: repeat-y;
            margin: auto;
            padding: 0 30px;
            width: 772px;
        }
        #content {
            background-color: white;
            padding: 16px 21px;
            width: 730px;
            margin: 0;
        }
    </style>
</head>
<body>
    <div id="wrapper">
        <div id="content">
            <img src="images/spacer.gif" width="1" height="5000" alt="" />
        </div>
    </div>
</body>
</html>