title: Triggering onclick button with Python mechanize
body: <p>So,here's the problem:
  I got a form that gives an info. The form has only one field and i can easily write inside anything using .select_form and .form functions of mechanize.</p>
  
  <p>However the submit func.doesn't work as well as it should.</p>
  
  <p>How can i click the onclick button using mechanize?
  I know it's JS but it should be a proper way to do it also in Py.</p>
  
  <p>This is the HTML code of the form:</p>
  
  <pre><code>&lt;input type="text" name="P_COD" value="IT001990225863" class="textbox2" maxlength=14 size=20 onblur="this.value=this.value.toUpperCase()"&gt;
  &amp;nbsp;&amp;nbsp;&amp;nbsp;
  &lt;input TYPE="button" VALUE="Search" onclick="query()" class="pulsante"&gt;
  </code></pre>
  
  <p>I've tried also <code>br.click('Search')</code>, it correctly point to the button, but gives the following error: <code>ControlNotFoundError: no control matching name 'Search', kind 'clickable'</code></p>
  
  <p>this is the list of the forms:</p>
  
  <pre><code>&lt;HiddenControl(P_CAP=BOV) (readonly)&gt;
    &lt;HiddenControl(P_COD_S=) (readonly)&gt;
    &lt;TextControl(P_COD=IT001990225863)&gt;
    &lt;IgnoreControl(&lt;None&gt;=&lt;None&gt;)&gt;&gt;
  </code></pre>