title: Using xmlhttp.open() how do I add more than one parameter to url?
body: <p>I have this code.</p>
  
  <pre><code>xmlhttp.open("GET","getuser.php?q="+str,true);
  
  where q="+str
  </code></pre>
  
  <p>I want to pass a second var how do I do this?</p>