       <span>Running <input id="running" type="checkbox" oninput="showPreview()"></span>
                        <span>Imperial <input id="imperial" type="checkbox" oninput="showPreview()"></span>
                        <span>Distance markers <input id="distance" type="checkbox" oninput="showPreview()" checked></span>
                        <span>Direction markers <input id="direction" type="checkbox" oninput="showPreview()"></span>
                        <span>Slope <input id="slope" type="checkbox" oni