index.html

<!DOCTYPE html>
<html>
    <head>
        <title>KEANet</title>
    </head>
    <body>
        <h1>KEANet</h1>
        <div>
            <input type="checkbox" id="chkInternetConnection">
            <label for="chkInternetConnection" id="internetConnection">Internet connection</label>
            <br>
            <label for="txtPhoneLines">Phone lines</label>
            <input type="number" id="txtPhoneLines" value="0">
            <br>
            <label for="cmbCellPhones">Cell phones:</label>
            <br>
            <table>
                <tr>
                    <td>
                        <select id="cmbCellPhones" size="5">
                            <option value="moto" selected="selected">Motorola G99</option>
                            <option value="iphone">iPhone 99</option>
                            <option value="samsung">Samsung Galaxy 99</option>
                            <option value="sony">Sony Xperia 99</option>
                            <option value="huawei">Huawei 99</option>
                        </select>
                    </td>
                    <td>
                        <input type="button" value="&gt;" id="rightBtn">
                        <br>
                        <input type="button" value="&lt;" id="leftBtn">
                    </td>
                    <td>
                        <select id="txtChosenCellPhones" size="5" style="width: 150px">
                        </select>
                    </td>
                </tr>
            </table>
            <p id="price">Total price: 0 DKK</p>
            <input id="buyBtn" type="submit" value="Buy">
        </div>
    </body>
<footer>
    <script type="text/javascript" src="index.js"></script>
</footer>
</html>