title: how to open a html gwt page within another by clicking a button
body: <p>I have a DockLayoutPanel in my GWT, I have defined the North, South and West as the folloing</p>
  
  <pre><code>dockLayoutPanel.addNorth(new HTML("PLACE HOLDER FOR HEADER"), 8);
  dockLayoutPanel.addSouth(new HTML("PLACE HOLDER FOR FOTTER"), 5);
  dockLayoutPanel.addWest(scrollPanel, 50);----scrollPanel is basically a flextable with buttons.
  </code></pre>
  
  <p>Basically what I want to achieve is when the user clicks on the button that is in the <code>flextable</code>, it has to open an another HTML gwt page within the same page towards the right side of the button.(i.e within the same page and in the center of the <code>dockLayoutPanel</code>).</p>
  
  <p>Can someone please help me with this.
  First thing is how to embed HTML gwt page within another
  and Second is how to open it with click of the button within the same page.</p>