title: How to disable all buttons on the page while uploading?
body: <p>I'm using json +jquery on client side. I want to disable all buttons found on the page while uploading file. Currently I'm disabling the upload button only using its id as shown below..</p>
  
  <blockquote>
  <pre><code>$("#upload_attachment_button").addClass('ui-state-disabled');
  </code></pre>
  </blockquote>
  
  <p>I wonder if there is a way to disable the rest of the buttons found on the page. I have done a function that I want to use by all the system, and I don't want to send the buttons id every time I want to call this function..</p>
  
  <p>Thanks.</p>