问如何在IE中修复我的jQuery代码？在Firefox中工作

EN

// wait for the DOM to be loaded
$(document).ready(function() {

 // hide the plugin options
 $('#pluginOptionsContainer').hide();

 // This is the hack for IE
 if ($.browser.msie) {
   $("#pluginDD").click(function() {
     this.blur();
     this.focus();
   });
 }

 // set the main function
 $(function() {

  // the button shows hides the plugin options page (and its container)
  $("#pluginOptionsBtn") .click(function() {
    // show the container of the plugin options page
   $('#pluginOptionsContainer').empty().append('<div style="text-align:center;width:99%;">Loading...</div>');
   $('#pluginOptionsContainer').toggle();
  });

  // set the loading message if user changes selection with either the dropdown or button
  $("#pluginDD,#pluginOptionsBtn").bind('change', function() {
    $('#pluginOptionsContainer').empty().append('<div style="text-align:center;width:99%;">Loading...</div>');
  });

  // then update the page when the plugin is changed when EITHER the plugin button or dropdown or clicked or changed
  $("#pluginDD,#pluginOptionsBtn").bind('change click', function() {
    // set form fields as vars in js
   var pid = <?=$pid;?>;
   var cid = <?=$contentid;?>;
   var pDD = $("#pluginDD").val();
    // add post vars (must use JSON) to be sent into the js var 'dataString'
   var dataString = {plugin_options: true, pageid: pid, contentid: cid, pluginDD: pDD };
   // include the plugin option page inside the container, with the required values already added into the query string
   $("#pluginOptionsContainer").load("/admin/inc/edit/content/plugin_options.php#pluginTop", dataString);
   // add this to stop page refresh
   return false;
  }); // end submit function

 }); // end main function
 }); // on DOM load