/***
	 * Pacth for dialog-fix ckeditor problem [ by ticket #4727 ]
	 *      http://dev.jqueryui.com/ticket/4727
	 */

$.extend($.ui.dialog.overlay, { create: function (dialog) {
    if (this.instances.length === 0) {
        // prevent use of anchors and inputs
        // we use a setTimeout in case the overlay is created from an
        // event that we're going to be cancelling (see #2804)
        setTimeout(function () {
            // handle $(el).dialog().dialog('close') (see #4065)
            if ($.ui.dialog.overlay.instances.length) {
                $(document).bind($.ui.dialog.overlay.events, function (event) {
                    var parentDialog = $(event.target).parents('.ui-dialog');
                    if (parentDialog.length > 0) {
                        var parentDialogZIndex = parentDialog.css('zIndex') || 0;
                        return parentDialogZIndex > $.ui.dialog.overlay.maxZ;
                    }

                    var aboveOverlay = false;
                    $(event.target).parents().each(function () {
                        var currentZ = $(this).css('zIndex') || 0;
                        if (currentZ > $.ui.dialog.overlay.maxZ) {
                            aboveOverlay = true;
                            return;
                        }
                    });

                    return aboveOverlay;
                });
            }
        }, 1);

        // allow closing by pressing the escape key
        $(document).bind('keydown.dialog-overlay', function (event) {
            (dialog.options.closeOnEscape && event.keyCode
	                                        && event.keyCode == $.ui.keyCode.ESCAPE && dialog.close(event));
        });

        // handle window resize
        $(window).bind('resize.dialog-overlay', $.ui.dialog.overlay.resize);
    }

    var $el = $('<div></div>').appendTo(document.body)
	                .addClass('ui-widget-overlay').css({
	                    width: this.width(),
	                    height: this.height()
	                });

    (dialog.options.stackfix && $.fn.stackfix && $el.stackfix());

    this.instances.push($el);
    return $el;
} 
});