TinyMCE example

        _mceImage : function(ui, val) {
            var ed = this.editor;
            var t = this;

            // Internal image object like a flash placeholder
            if (ed.dom.getAttrib(ed.selection.getNode(), 'class').indexOf('mceItem') != -1)
                return;

            XenForo.ajax('index.php?editor/dialog', { dialog: 'fast_image'}, t._xenforo_ajax_success);
        },

        _xenforo_ajax_success: function(ajaxData)
        {
            if (XenForo.hasResponseError(ajaxData) || typeof(ajaxData.templateHtml) == 'undefined')
            {
                return;
            }

                if (ajaxData.templateHtml)
                {
                    new XenForo.ExtLoader(ajaxData, function()
                    {
                        var overlay, overtop, isTouch = XenForo.isTouchBrowser();
                        if(isTouch) { overtop = '10%'; } else { overtop = 'center'; }

                        $triger = $(ajaxData.templateHtml).find('.miuTriger');
                        $focus = $(ajaxData.templateHtml).find('.mceFocus');
                        $inputs = $(ajaxData.templateHtml).find('input');

                        overlay = $(ajaxData.templateHtml)
                            .xfInsert('prependTo', 'body', 'xfFadeIn')
                            .overlay({
                                mask: {
                                        color: '#000000',
                                        zIndex: 10010,
                                        loadSpeed: 200,
                                        opacity: 0.6
                                },
                                onBeforeLoad: function(e) {
                                    $('.xenOverlay').css('opacity', '0.5');
                                },
                                onLoad: function(e) {
                                    this.getOverlay().insertAfter('#exposeMask').addClass('isLoaded');//@http://stackoverflow.com/questions/1939494/
                                        $inputs
                                        .bind('keypress', function(e){
                                            //Map "return" Key to the .miuTriger button
                                            if ( e.which == 13 )
                                            {
                                                e.preventDefault();
                                                $triger.trigger('click');
                                            }
                                        });
                                        $triger.one('click', function (e){
                                            e.stopImmediatePropagation();

                                            var inputs = {};

                                            $inputs.each(function(index) {
                                                inputs[$(this).attr('name')] = $(this).val();
                                            });
                                            overlay.close();

                                            //XenForo.miuExtra.miu.textarea.focus();
                                            //XenForo.miuExtra[redirection](inputs, XenForo.miuExtra.miu);
                                            return false;
                                        });

                                        $focus.focus();
                                    },
                                        onClose: function(e) {
                                            $('.xenOverlay').css('opacity', '1').expose();
                                            $inputs.val('');
                                        },
                                        top: overtop,
                                        left:0, //will be centered by css... better to avoid bugs
                                            fixed:!isTouch,
                                        closeOnClick: false,
                                        oneInstance: false,
                                        load: true,
                                        api:true
                                    }).load();

                                return false;
                    });
                }
        },