[jQuery] Disable Submit

I have a form i am submitting via Ajax. So after submit while its waiting
for response i have my little spinner so user knows something is happening.
But how can i disable the submit while its "thinking" waiting for a response
so the user is not sitting there clicking submit over and over.
 
Using this for my js as of now;
 
$('#new_set').live('click', addRecord);
 
 
 function addRecord() {
 
 var data = $('#add').serialize();
 
 $("#add").slideToggle('fast');
 $('.flash').prepend('<div class="saving"></div>');
 //$('#new_set').die('click');
 $.ajax({
  type: "post",
         url: "/manage/awards/add",
         data: data,
         dataType: 'json',
         success: function(response){
   if (response.status === true) {
    alert(response.status);

     $('.saving').remove();

   } else {
                //$('#new_set').live('click');
    alert(response.status);
    $('.saving').remove();

 
   }
  }
 });
    }

I tried adding $('#new_set').die('click'); but then it never submitted.
 
Thanks
 
Dave