title: how to run gwt gae app on every browser?
body: <p>how is it possible to run a gwt app on all browsers?</p>
  
  <p>when i put in my app_name.gwt.xml</p>
  
  <pre><code>&lt;set-property name="user.agent" value="gecko1_8" /&gt;  
  </code></pre>
  
  <p>the app runs only on firefox</p>
  
  <p>if i put </p>
  
  <pre><code>&lt;set-property name="user.agent" value="safari" /&gt;  
  </code></pre>
  
  <p>it runs on google chrome.</p>
  
  <p>if i put </p>
  
  <pre><code>&lt;set-property name="user.agent" value="safari" /&gt;
  &lt;set-property name="user.agent" value="gecko1_8" /&gt;
  </code></pre>
  
  <p>he takes the last value so the app runs only on firefox.</p>
  
  <p>i have tried things like this</p>
  
  <pre><code>&lt;set-property name="user.agent" value="gecko1_8, safari" /&gt;
  </code></pre>
  
  <p>or</p>
  
  <pre><code> &lt;set-property name="user.agent" value="safari" value="gecko1_8"/&gt; 
  </code></pre>
  
  <p>but nothing works.
  what to do that the gwt app runs on every browser?</p>