title: Polymer Get Paper Input Value
body: <p>I am using Polymer for a short time and now i want to get the value of a paper input. I don't know how can I do this.
  This is not working:</p>
  
  <pre><code>this.form.password
  </code></pre>
  
  <p>I want to get the Value of this field:</p>
  
  <pre><code>&lt;paper-input label="Password" type="password" id="password" name="password" size="25" value=""&gt;&lt;/paper-input&gt;
  </code></pre>
  
  <p>I also want get the Input for submitting of the e-mail input:</p>
  
  <pre><code>&lt;paper-input label="Login" id="email" name="email" size="25" value=""&gt;&lt;/paper-input&gt;
  </code></pre>
  
  <p>For submitting I am using:</p>
  
  <pre><code>&lt;paper-button raised value="Login" type="submit" onclick="formhash(this.form, this.form.password);"&gt;Login&lt;/paper-button&gt;
  </code></pre>
  
  <p>With normal input fields is this working.</p>