I'm trying to click a button on a website using HTMLUnit and i can't seem to figure how to do it! The button looks like this: 

```
<p class="submit">
<button class="button" tabindex="3" type="submit">create account</button>
<span class="throbber"></span>
<span class="status" style="display: none;"></span>
</p>

```

I've tried a few things and nothing seems to work. 
Can anyone help me out with this!?