title: GWT Widget ID and HTML standard
body: <p>I have a custom widget (<code>OrderItem</code>) in a GWT project. This widget has a <code>TextBox</code>. I set  it's id to "Navid". But what if I create multiple instances of <code>OrderItem</code> in a panel? The id would be repeated then. This'd make the html invalid.</p>
  
  <p>How do I assign a unique id to the TextBox?</p>