title: How to submit a javascript-form using Python requests library?
body: <p>I want to get some price quotes from a bitcoin exchange called bitonic(.nl). On their frontpage they´ve got a little form on which you can fill in either an amount in Bitcoins or in Euros. If you fill in the bitcoin field the Euro-field gets updated, and if you enter an amount in Euros the Bitcoin-field gets updated (probably using javascript).</p>
  
  <p>I now want to use the Python requests library to fill in the form and read out the resulting quote. I know how to request a page with requests (<code>r = requests.get('http://bitconic.nl')</code>), and I know you can do a similar thing using <code>requests.post()</code>. The problem is now that I don't know how to fill in this form and read out the result when the form is filled in using javascript.</p>
  
  <p>Does anybody have any idea how I could do this? All tips are welcome!</p>