title: How to pass parameters in Impromptu callback?
body: <p>I'm using jQuery Impromptu as a pop window. The raw code is as follow:</p>
  
  <pre><code>function f1(pa1, pa2){
      $.prompt("need to delete?",{
           callback: callbackfunc,
           button: {OK: true, Cancel: false}
      });
  }
  function callbackfunc(v,m,f){
      if(v){
          // want to process the pa1 and pa2.
      }
  }
  </code></pre>
  
  <p>How to process <code>pa1</code> and <code>pa2</code> inside the callback? </p>