IE uses fireEvent and createEventObject

src/ie/event.js

@@ -82,15 +82,14 @@ xui.extend({
 
   	fire: function (type, data) {
         return this.each(function (el) {
-            if (el == document && !el.dispatchEvent)
+            if (el == document && !el.fireEvent)
                 el = document.documentElement;
 
-            var event = document.createEvent('HTMLEvents');
-            event.initEvent(type, true, true);
+            var event = document.createEventObject();
             event.data = data || {};
             event.eventName = type;
 
-            el.dispatchEvent(event);
+            el.fireEvent("on" + type, event);
   	    });
   	}
 
@@ -101,15 +100,6 @@ xui.extend({
   xui.fn[event] = function(action) { return function (fn) { return fn ? this.on(action, fn) : this.fire(action); }; }(event);
 });
 
-// this doesn't belong on the prototype, it belongs as a property on the xui object
-xui.touch = (function () {
-  try{
-    return !!(document.createEvent("TouchEvent").initTouchEvent)
-  } catch(e) {
-    return false;
-  };
-})();
-
 xui.ready = function(handler) {
   domReady(handler);
 }