<!DOCTYPE html>

<html>
<head>
    <style>
        body {
            height: 2000px;
            width: 2000px;
            overflow: hidden;
        }
        
        .box {
            width: 300px;
            height: 300px;
            margin: 20px;
            position: relative;
        }
        
        body > .box {
            border: 1px solid black;
            float: left;
        }
        .child {
            position: absolute;
            top: 50px;
            left: 50px;
            height: 200px;
            width: 200px;
            margin-left: 10px;
            background-image: url('../resources/alpha-blocks.png');
            background-size: 500px 300px;
            background-repeat: no-repeat;
            background-attachment: fixed;
            border: 4px solid gray;
        }
    </style>
    <script>
        function doTest()
        {
            window.scrollTo(35, 45);
        }
        window.addEventListener('load', doTest, false);
    </script>
</head>
<body>

<div class="box">
    <div class="child box"></div>
</div>

<div class="box">
    <div class="child box"></div>
</div>

</body>
</html>