Change mouse event to include an X + Y value for client position

@@ -423,7 +423,18 @@
             }
             try {
                 var evt = document.createEvent("MouseEvents");
-                evt.initMouseEvent(type, true, true, window, 1, 1, 1, 1, 1, false, false, false, false, 0, elem);
+                
+                 try {
+                      var pos = elem.getBoundingClientRect(),
+                      center_x = Math.floor((pos.left + pos.right) / 2),
+                      center_y = Math.floor((pos.top + pos.bottom) / 2);
+                 } catch(e) {
+                     var center_x = 1, center_y = 1;
+                 }
+                
+                evt.initMouseEvent(type, true, true, window, 1, 1, 1, center_x, center_y, false, false, false, false, 0, elem);
+                
+                
                 // dispatchEvent return value is false if at least one of the event
                 // handlers which handled this event called preventDefault;
                 // so we cannot returns this results as it cannot accurately informs on the status