title: jQuery keypress() event not firing?
body: <p>I am trying to fire an event on the right and left arrow key presses with jQuery. Using the following code, I can fire events on any of the alphanumeric keys, but the cursor keys (up, down, left, right) fire nothing. I am developing the site primarily for IE users because it is a line of business app. Am I doing something wrong here?</p>
  
  <pre><code>$('document').keypress(function(e){
      switch (e.which) {
          case 40:
              alert('down');
              break;
          case 38:
              alert('up');
              break;
          case 37:
              alert('left');
              break;
          case 39:
              alert('right');
              break;
          default:
              alert('???');  
              }      
  });
  </code></pre>