Jquery validation plugin : checkbox included an input required

Jquery validation plugin : checkbox included an input required

Hi,

I am using http://jqueryvalidation.org/

I have a simple checkbox "are you member : yes or no".
I put this one required with the validation plugin.

Then, if a someone check no, i do nothing more.
But, if someone check yes, i want to include another input required : the member's number.

And I didn't find how to do it.

here the formular part :
  1.             <ul class="inline">
                    <li><p><label id="inscriptionenligneouinon_membre"> <?php echo $lang['inscriptionenligne_ouinon']; ?> </label></p></li>
                    <li><p><input type="radio" name="ouinon" value="oui" id="membre" class="width"/> </p></li>
                    <li><p><label class="membreoui"  for="oui"><?php echo $lang['inscriptionenligne_oui']; ?></label><br /></p></li>
                    <li><p><input type="radio" name="ouinon" value="non" id="membrenon" class="width" /> </p></li>
                    <li><p><label  class="membrenon"  for="non"><?php echo $lang['inscriptionenligne_non']; ?></label><br /></p></li>
                    <li><p><label for="inscriptionenligne_nummembre" class="num_membre" ><?php echo $lang['inscriptionenligne_nummembre']; ?>:</label></p></li>
                    <li><p><input type="text" name="inscriptionenligne_nummembre"  id="inscriptionenligne_nummembre" /></p></li>
                 </ul>


then, i've tried somme thing but didn't find

  1.         $().ready(function() {
            // validate signup form on keyup and submit
            $("#inscriptionenligneform").validate({
                rules: {
                    //if ($('input[name=membre]:checked').value == true){
                    //if ($("#membre input[type='radio']:checked").val())
                    //if (document.getElementById('ouinon').checked == true)
                    //    inscriptionenligne_nummembre: "required",
                    //}
                   
                   
                    //ouinon:"required",
                    //{
                    //    required : "true",
                        //equalTo:
                        //{
                        //    value : "oui";
                        //    inscriptionenligne_nummembre :"required",
                        //}
                    //}
                   
                   
                    inscriptionenligne_nummembre :
                    {
                        required: true,
                        //ouinon: {
                        //depends: function(element)
                        //    {
                        //    return $("#ouinon").is(":checked");
                        //    }
                        //}
                    }  });
        });

I put all my tests in comment....

Do you know how to write that ?
(chekbox and if yes, another input required)

many thanks for your ideas

Timama