Validacao de combobox - datas

[Martinsrj]

Alguém sabe, quando o usuario selecionar na combobox dia o numero 30 e na combobox o mês de fevereiro de uma critica como: o mês de fevereiro não possui 30 dias.

Só falta isso Galera, pois os outros campos está funcionando direitinho!

Vejam a imagem abaixo:

<select name="date_dia" id="text_data">
                                <option>Dia</option>
                                <option value="01">01</option>
                                <option value="02">02</option>
                                <option value="03">03</option>
                                <option value="04">04</option>
                                <option value="05">05</option>
                                <option value="06">06</option>
                                <option value="07">07</option>
                                <option value="08">08</option>
                                <option value="09">09</option>
                                <option value="10">10</option>
                                <option value="11">11</option>
                                <option value="12">12</option>
                                <option value="13">13</option>
                                <option value="14">14</option>
                                <option value="15">15</option>
                                <option value="16">16</option>
                                <option value="17">17</option>
                                <option value="18">18</option>
                                <option value="19">19</option>
                                <option value="20">20</option>
                                <option value="21">21</option>
                                <option value="22">22</option>
                                <option value="23">23</option>
                                <option value="24">24</option>
                                <option value="25">25</option>
                                <option value="26">26</option>
                                <option value="27">27</option>
                                <option value="28">28</option>
                                <option value="29">29</option>
                                <option value="30">30</option>
                                <option value="31">31</option>
                              </select>
                          <label>
                                  <select name="date_mes" id="select2">
                                    <option>Mês</option>
                                    <option value="01">Janeiro</option>
                                    <option value="02">Fevereiro</option>
                                    <option value="03">Marco</option>
                                    <option value="04">Abril</option>
                                    <option value="05">Maio</option>
                                    <option value="06">Junho</option>
                                    <option value="07">Julho</option>
                                    <option value="08">Agosto</option>
                                    <option value="09">Setembro</option>
                                    <option value="10">Outubro</option>
                                    <option value="11">Novembro</option>
                                    <option value="12">Dezembro</option>
                                  </select>
                                  <select name="date_ano" id="select3">
                                    <option>Ano</option>
                                    <option value="2009">2009</option>
                                    <option value="2010">2010</option>
                                    <option value="2011">2011</option>
                                    <option value="2012">2012</option>
                                  </select>

[Jonathan Queiroz]

Postei um tópico no Repositório de Scripts - JavaScript com isso: Integração de meses e dias em combo