Checkbox FF? (Opgelost)

 <input name="Groningen," type="checkbox" id="checkbox" value="1" />
                Groningen<br />
                <input type="checkbox" name="Friesland," id="checkbox2" value="1" />
                Friesland<br />
                <input type="checkbox" name="Drenthe," id="checkbox3" value="1" />
                Drenthe<br />
                <input type="checkbox" name="Overijssel," id="checkbox4" value="1" />
                Overijssel
                <br />
                <input type="checkbox" name="Gelderland," id="checkbox5" value="1" />
              Gelderland</label></td>
              <td width="166"><label>
                <input type="checkbox" name="Limburg," id="checkbox6" value="1" />
                Limburg<br />
                <input type="checkbox" name="Braban,t" id="checkbox7" value="1" />
                Brabant<br />
                <input type="checkbox" name="Utrecht," id="checkbox8" value="1" />
                Utrecht<br />
                <input type="checkbox" name="Flevoland," id="checkbox9" value="1" />
                Flevoland<br />
                <input type="checkbox" name="Zuid-holland," id="checkbox10" value="1" /> 
                Zuid holland<br />
                <input type="checkbox" name="Noord-holland," id="checkbox11" value="1" /> 
                Noord holland

<input name="Groningen," type="checkbox" id="checkbox" value="1" />
                Groningen<br />
                <input type="checkbox" name="Friesland," id="checkbox2" value="1" />
                Friesland<br />
                <input type="checkbox" name="Drenthe," id="checkbox3" value="1" />
                Drenthe<br />
                <input type="checkbox" name="Overijssel," id="checkbox4" value="1" />
                Overijssel
                <br />
                <input type="checkbox" name="Gelderland," id="checkbox5" value="1" />
              Gelderland</label></td>
              <td width="166"><label>
                <input type="checkbox" name="Limburg," id="checkbox6" value="1" />
                Limburg<br />
                <input type="checkbox" name="Braban,t" id="checkbox7" value="1" />
                Brabant<br />
                <input type="checkbox" name="Utrecht," id="checkbox8" value="1" />
                Utrecht<br />
                <input type="checkbox" name="Flevoland," id="checkbox9" value="1" />
                Flevoland<br />
                <input type="checkbox" name="Zuid-holland," id="checkbox10" value="1" /> 
                Zuid holland<br />
                <input type="checkbox" name="Noord-holland," id="checkbox11" value="1" /> 
                Noord holland