title: window.open to get back to previous page
body: <p>I made a popup (using window.open) it has another page inside it. Is there a way to get back to thet page from which popup was called ? </p>
  
  <p>Or is there a better solution to make the popup (for example who has a form inside that I have to fill) and after I update parameters would send to previous page (where popup was called)?</p>