title: Rails 3 : In submit button :disable_with is not working
body: <p>In this following code :disable_with is not working in rails 3. But it is perfectly working in rails 2.2</p>
  
  <p>What is wrong in this code?</p>
  
  <pre><code>&lt;%= submit_tag "Save", :class =&gt; "buttons",
                         :disable_with =&gt; "Processing",
                         :id =&gt; 'save_btn' %&gt;
  </code></pre>