diff --git a/lib/ace/mouse/mouse_handler.js b/lib/ace/mouse/mouse_handler.js
index d032e687..6b331eee 100644
--- a/lib/ace/mouse/mouse_handler.js
+++ b/lib/ace/mouse/mouse_handler.js
@@ -48,6 +48,10 @@ var MouseHandler = function(editor) {
     new DragdropHandler(this);
     
     var focusEditor = function(e) {
+        // because we have to call event.preventDefault() any window on ie and iframes 
+        // on other browsers do not get focus, so we have to call window.focus() here
+        if (!document.hasFocus || !document.hasFocus())
+            window.focus();
         editor.focus();
     };