title: How to change URL within GWT app
body: <p>I'm working with a gwt multipage project which I used these code to switch between html pages, for this case switching from index.html to signup.html page:</p>
  
  <pre><code>public static native void fireChangePage(String url)/*-{
          $wnd.location.href = url;
  }-*/;
  
  public void goToSignUpPage(boolean isDeployed) {
    String url = (isDeployed == true ? "signup.html" : "signup.html?gwt.codesvr=127.0.0.1:9997");
          fireChangePage(url);
  }
  </code></pre>
  
  <p>I'm getting error 404 when <code>fireChangePage</code> is called from the EntryPoint for the index.html.
  Manually changing the url on the browser say: index.html?gwt.codesvr=127.0.0.1:9997 to signup.html?gwt.codesvr=127.0.0.1:9997 works, so I can say that the problem is with the native function <code>fireChangePage</code>. </p>
  
  <p>What could be the problem with the native function? Or is there a better approach than this? </p>