title: Why can't I submit a dynamically created form in Firefox
body: <p>I copied a part of a bigger project i'm working on, I didn't wrote the code so I hope someone could help me find out why sending a post request from js code with this fashion works in IE and doesn't in other browsers. </p>
  
  <pre><code>function f() {
      var container = document.createElement("form");
      container.method = "post";
      container.action= "http://localhost:3203/somefile.aspx";
      document.appendChild(container);
      container.submit();
  }
  </code></pre>