title: Extjs pass in parameters to window on show
body: <p>I want to pass parameters to my window when I call window.show().</p>
  
  <p>I added in a listener to my window for the show method but it's displaying the parameter as [Object, object].</p>
  
  <pre><code> #window call
   var test = 'hi';
   tstWin.show(test);
  
   #listener
    listeners : {             
      'show' : function(test){
          alert(test.value);
       }   
    }
  </code></pre>