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diff --git a/_source/core/focusmanager.js b/_source/core/focusmanager.js
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+/*
+Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.
+For licensing, see LICENSE.html or http://ckeditor.com/license
+*/
+
+/**
+ * @fileOverview Defines the {@link CKEDITOR.focusManager} class, which is used
+ *		to handle the focus on editor instances..
+ */
+
+/**
+ * Manages the focus activity in an editor instance. This class is to be used
+ * mainly by UI elements coders when adding interface elements to CKEditor.
+ * @constructor
+ * @param {CKEDITOR.editor} editor The editor instance.
+ * @example
+ */
+CKEDITOR.focusManager = function( editor )
+{
+	if ( editor.focusManager )
+		return editor.focusManager;
+
+	/**
+	 * Indicates that the editor instance has focus.
+	 * @type Boolean
+	 * @example
+	 * alert( CKEDITOR.instances.editor1.focusManager.hasFocus );  // e.g "true"
+	 */
+	this.hasFocus = false;
+
+	/**
+	 * Object used to hold private stuff.
+	 * @private
+	 */
+	this._ =
+	{
+		editor : editor
+	};
+
+	return this;
+};
+
+CKEDITOR.focusManager.prototype =
+{
+	/**
+	 * Indicates that the editor instance has the focus.
+	 *
+	 * This function is not used to set the focus in the editor. Use
+	 * {@link CKEDITOR.editor#focus} for it instead.
+	 * @example
+	 * var editor = CKEDITOR.instances.editor1;
+	 * <b>editor.focusManager.focus()</b>;
+	 */
+	focus : function()
+	{
+		if ( this._.timer )
+			clearTimeout( this._.timer );
+
+		if ( !this.hasFocus )
+		{
+			// If another editor has the current focus, we first "blur" it. In
+			// this way the events happen in a more logical sequence, like:
+			//		"focus 1" > "blur 1" > "focus 2"
+			// ... instead of:
+			//		"focus 1" > "focus 2" > "blur 1"
+			if ( CKEDITOR.currentInstance )
+				CKEDITOR.currentInstance.focusManager.forceBlur();
+
+			var editor = this._.editor;
+
+			editor.container.getFirst().addClass( 'cke_focus' );
+
+			this.hasFocus = true;
+			editor.fire( 'focus' );
+		}
+	},
+
+	/**
+	 * Indicates that the editor instance has lost the focus. Note that this
+	 * functions acts asynchronously with a delay of 100ms to avoid subsequent
+	 * blur/focus effects. If you want the "blur" to happen immediately, use
+	 * the {@link #forceBlur} function instead.
+	 * @example
+	 * var editor = CKEDITOR.instances.editor1;
+	 * <b>editor.focusManager.blur()</b>;
+	 */
+	blur : function()
+	{
+		var focusManager = this;
+
+		if ( focusManager._.timer )
+			clearTimeout( focusManager._.timer );
+
+		focusManager._.timer = setTimeout(
+			function()
+			{
+				delete focusManager._.timer;
+				focusManager.forceBlur();
+			}
+			, 100 );
+	},
+
+	/**
+	 * Indicates that the editor instance has lost the focus. Unlike
+	 * {@link #blur}, this function is synchronous, marking the instance as
+	 * "blured" immediately.
+	 * @example
+	 * var editor = CKEDITOR.instances.editor1;
+	 * <b>editor.focusManager.forceBlur()</b>;
+	 */
+	forceBlur : function()
+	{
+		if ( this.hasFocus )
+		{
+			var editor = this._.editor;
+
+			editor.container.getFirst().removeClass( 'cke_focus' );
+
+			this.hasFocus = false;
+			editor.fire( 'blur' );
+		}
+	}
+};