title: Need to modify HTTP headers to enable the Proxy Auth for Selenium 2.0
body: <p>It requires to inject additional header into the HTTP request to enable proxy auth. E.g.</p>
  
  <p>Proxy-Authorization: Basic dGVzdDp0ZXN0, 
  where dGVzdDp0ZXN0 is base64 login and password.</p>
  
  <p>In selenium RC there was such a possibility, but in Selenium 2.0 on RC emulation this does not work. Any ideas?</p>
  
  <p>Thanks in advance.</p>