title: Selenium - how to switch to a different (login) window that is brought up?
body: <p>My application has an admin account and the testing has been within that.</p>
  
  <p>This account then has hyperlinks for 'regular' users that they use for their login, for example:  </p>
  
  <p>One   <code>http://dmplanning-stage.herokuapp.com/p/7Fimn1FRs1WZe5xmFTUA</code><br>
  Two   <code>http://dmplanning-stage.herokuapp.com/p/FRs1WZe7Fimn15TUAxmF</code><br>
  Three <code>http://dmplanning-stage.herokuapp.com/p/mFTUA7Fimn1FRs1WZe5x</code>  </p>
  
  <p>These links are generated each time I run the test suite and the id's are different.</p>
  
  <p>I've created a test to locate and click on the hyperlink on a page that lists these users and their login hyperlinks.  The test runs and selenium makes the browser bring up the new window but how do I then switch to it, so I can login and continue?</p>
  
  <p>To make it more challenging the other window has an empty title, i.e. </p>
  
  <p>I can get the programmer to add a title but it would take time.  Is there any way with/without that to identify and switch to the other window?</p>