Why I can't submit?

[Jorrin Ruiz de Arcaute, Jorge]

This is the code. 
I've tried to put the href in many positions but the combo keeps on being no
sensible. 
Any idea?
Thank-you anyway!


                  <select name="select" size="7" class="textbox">

                        <logic:iterate id="modelo" name="listado"> 
                      <a href="javascript:void(0)"
onclick="document.forms[0].submit()">
                        <option>                
                        <bean:write name="modelo" property="imagen"/>

                        </option>
                      </a>
                        </logic:iterate>

                    </select>