Could you tell me how to limit content width to the screen boundary? For the following script i always get 2px width wider than screen (allowed space) width.

document.body.scrollWidth is always 2px wider than screen

```
<html>
<head>
    <style>
        * {margin: 0; padding: 0}
    </style>
    <script type="text/javascript">
        function test(){
            alert(document.body.scrollWidth);
            alert(document.getElementById("hrtest").scrollWidth);
            alert(document.getElementById("divtest").scrollWidth);
            alert(screen.width);
        }
    </script>
</head>
<body onLoad="test()">
    <div id="divtest">
        <hr size="2" width="100%" id="hrtest" />
    </div>
</body>
</html>

```