title: browser.msie error after update to jQuery 1.9.1
body: <p>I use the following snip of a script:</p>
  
  <pre><code>if ($.browser.msie &amp;&amp; $.browser.version &lt; 9) {
     extra = "?" + Math.floor(Math.random() * 3000);
  }
  </code></pre>
  
  <p>It works fine with <strong>jQuery 1.8.3</strong>.</p>
  
  <p>Now I updated jQuery to the new version <strong>1.9.1</strong> to use a new script.<br>
  Now I get the following error:</p>
  
  <blockquote>
    <p>TypeError: Cannot read property 'msie' of undefined</p>
  </blockquote>
  
  <p>I read the change log of the new jQuery version, but nothing should have changed<br>
  with <em>msie</em></p>
  
  <p>Any known bugs, tips or proposals?</p>