title: disable all check boxes
body: <p>following code work fine but 1 error</p>
  
  <pre><code>$(document).ready(
  function() {
  
  
   $("#myCheckboxes input[type='checkbox']").change(function() {
      var checked = $("#myCheckboxes input[type='checkbox']:checked").length;
  
          if(checked == 4){
             $("#myCheckboxes input[type='checkbox']")
              .attr('disabled',true)
              .find(':checked')
              .attr('disabled',false)
      } else {
          $("#myCheckboxes input[type='checkbox']").attr('disabled',false);
      }
  
  
      });
   });
  </code></pre>
  
  <p>after selection become 4 all check box become disable even selected one, but i don't want to disable selected check box's.</p>
  
  <p>Thanks</p>