CKE firefox did not works event instanceReady

Hi, it's problem when i try to load my page, ckeditor did not works event instanceReady in firefox. In Chrome and IE9 that's work fine. That's my code:

   initEditor: function () {
                this.stopEditor()
                var _this = this
                setTimeout(_.bind(this.setEditor, this), 0)
                return
            },

setEditor: function (editorOpts) {
                editorOpts = editorOpts || this.editorOpts()
                var _this = this
                this.stopEditor()
                this.editor = window.CKEDITOR.replace(this.$('div.note-text-input')[0], editorOpts)
                this.editor.isNoteEditor = true         
                this.editor.config.height = this.$('.note-text').height()
                this.editor.view = this

},
            editorOpts: function () {
                var _this = this
                var editorOpts = {
                    on: 
                        instanceReady: function(ev){
                               alert('Work!')
                        }

            },

Any ideas?