Cambios

<label class='radiolabel'><input type="radio" name="selectedcake" value="RoundTrip" onclick="calculateTotal()" />Is a round trip</label><br/>

<label>Distancia horizontal en metros</label> <input type="text" id="horizontal" name="horizontal" value="Distancia horizontal en metros" /> <br/> <label>Mean altitude of the whole route</label> <input type="text" id="altitude" name="altitude" value="Mean altitude of the whole route" /> <br/> <label>Metros de ascenso</label>