title: Event.observe() not working; ProtoytypeJS library
body: <p>I have this code.</p>
  
  <pre><code>&lt;html&gt;
      &lt;head&gt;
          &lt;script src="//ajax.googleapis.com/ajax/libs/prototype/1.7.1.0/prototype.js"&gt;    &lt;/script&gt;
          &lt;script&gt;
              Event.observe('clickme', 'click', function(event) {
                  alert('clicked');
              });
  
              Event.observe('uploadme', 'change', function(event) {
                  alert('hola');
              });
  
          &lt;/script&gt;
      &lt;/head&gt;
      &lt;body&gt;
          &lt;form enctype="multipart/form-data" action="insertimage.php" method="post" name="changer"&gt;
              &lt;input name="MAX_FILE_SIZE" value="10240000" type="hidden"&gt;
              &lt;input id="uploadme"  type="file"&gt;
              &lt;input type="button"  id="clickme" value="Upload Stuff!" /&gt;
              &lt;input id="sub" type="submit" /&gt;
          &lt;/form&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>This is not working. I am unable to get alert for anything. Can anyone please suggest a solution?</p>