index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Stelstørrelse</title>
    <script type="text/javascript" src="BikeSize.js"></script>
</head>
<body onload="loadForm();">
<form>
    <table>
        <tr>
            <th>Type of frame</th>
            <th>Frame size</th>
        </tr>
        <tr>
            <td colspan="2"><div id="frameSizeDiv" onchange="updateFrameSize();">Choose framesize:</div></td>
        </tr>
        <tr>
            <td>City bike</td>
            <td id="cityFrameSize">Choose framesize</td>
        </tr>
        <tr>
            <td>Mountainbike</td>
            <td id="mtbFrameSize">Choose framesize</td>
        </tr>
        <tr>
            <td>Racing bike</td>
            <td id="raceFrameSize">Choose framesize</td>
        </tr>
    </table>
</form>
</body>
</html>