title: IE8 jQuery error at line "elem[ type ]();"
body: <p>I am having trouble using jQuery 1.7.2, 1.8.0 or 1.8.3 in IE8. The webpage works well in Chrome, Firefox, IE9, Safari, and Opera.</p>
  
  <p>In IE8 it prompts the following error in the developer tools:</p>
  
  <p><code>Can't move focus to the control because it is invisible, not enabled, or of a type that does not accept the focus</code></p>
  
  <p>This error happened on line 2973 in jQuery 1.8.0 and 1.8.3 (in 1.7.2 it is line 3242): <code>elem[ type ]();</code> which exist inside the <code>trigger</code> function.</p>
  
  <p>How can I solve this problem? Or at least know which <code>trigger</code> execution caused this problem.</p>
  
  <p>Any hints will be greatly appreciated.</p>