I have developed some sort of Jcrop initialization for a website, I managed to make my own namespace. Question I have is regarding **this** keyword. Every time I had to access my base object *"aps"* in any callback function I must wrap **this** in a variable (I have chosen word **that**). Is there any better way to do it? For example can I use *call* or *apply* methods? This is just a namespace so I could use simple **aps.***methodName* but for sake of this example, please don't mind it. Here is my source code:

```
var aps;

$(function(){
    aps = function(){

        //  private
        //  variables

        var bgColor = '#f5f5f5';
        var threshold = 370;
        var threshold_width = 800;

        return {
            tmpl                :       $('#jcrop-template').html(),
            upl_cont            :       {},
            form                :       {},
            logo_img            :       new Image(),
            jcrop_api           :       null,
            scaled_logo_url         :       '',
            image_filename          :       '',
            original_image_filename     :       '',
            mime                :       '',
            trueSize            :       '',

            jcrop_init          :       function (oiFrameRes){
                $('#logo_upload_form').find('img').hide();
                this.scaled_logo_url = oiFrameRes.image_url;
                this.logo_url = oiFrameRes.original_image_url;
                this.original_image_filename = oiFrameRes.original_image_filename;
                this.image_filename = oiFrameRes.image_filename;
                this.mime = oiFrameRes.mime;
                this.upl_cont = $('#facebox div#upload-container-d');
                this.logo_img = new Image();
                this.logo_img.that      =   this;
                this.logo_img.name      =   'logo';
                this.logo_img.onload    =   function(){
                    this.true_width=this.width;
                    this.true_height=this.height;
                    this.that.resize_image();
                    this.that.resize_facebox();
                    this.that.display_image();
                }
                this.logo_img.src = this.logo_url;
            },

            resize_image            :       function(){
                this.trueSize = '';
                if(typeof (this.oSettings.trueSize)!=='undefined') delete(this.oSettings.trueSize);
                if (this.logo_img.width > threshold){
                    if (this.logo_img.width > threshold_width){
                        this.trueSize = [ this.logo_img.width, this.logo_img.height ];
                        this.logo_img.height = this.logo_img.height / (this.logo_img.width / threshold_width);
                        this.logo_img.width = threshold_width;
                    }
                }
            },

            resize_facebox          :       function(){
                    var width = (this.logo_img.width > threshold) ? this.logo_img.width : threshold ;
                    $('#facebox').css({
                        left    :   $(window).width() / 2 - width / 2
                    }).
                    find('div.change-size').css({'width': width+30});
            },

            display_image : function (){
                if (this.jcrop_api === null) {
                    $logo_img = $(this.logo_img).css({'display':'block','margin-left':'auto','margin-right':'auto'})
                    if (this.upl_cont.find('#logo-container-d>img').length > 0){
                        if (this.upl_cont.find('#logo-container-d>img').attr('src').length > 0){
                            this.upl_cont.find('#logo-container-d').empty().append($logo_img);
                        }
                    }
                    else {
                        this.upl_cont.append(this.tmpl).find('#logo-container-d').append($logo_img);
                    }

                    var that = this;
                    if (typeof (this.upl_cont.find('#jcrop-menu1 a').data('events')) === 'undefined'){
                        this.upl_cont.find('#jcrop-menu1 a').click(function(){
                            if (this.href.indexOf('#crop')>-1){
                                $(this).closest('div').hide();
                                that.upl_cont.find('#jcrop-menu2').show();
                                that.setup_crop();
                            }
                            if (this.href.indexOf('#close')>-1){
                                manageIframeResponse();
                            }   
                            location.hash = '';
                            return false;
                        });
                    }
                }
                else {
                    this.reset();
                }
            },

            reset : function(){
                $('#jcrop-menu2',this.upl_cont).find('a').unbind('click').end().hide();
                $('#jcrop-coords-f',this.upl_cont).find('input[type="text"]').each(function(){this.value="";}).end().hide();
                $('#jcrop-menu1',this.upl_cont).find('a').unbind('click').end().show();
                this.jcrop_api.destroy();
                this.jcrop_api=null;
                this.display_image();
            },

            send_form : function (){
                var sPost = $(this.form).find('input[name="image_filename"]').val(this.image_filename).end()
                        .find('input[name="original_image_filename"]').val(this.original_image_filename).end()
                        .find('input[name="mime"]').val(this.mime).end()
                        .find('input[name="user_url"]').val($('#logo_upload_base_url').val()).end()
                        .find('input[name="user_key"]').val($('#logo_upload_user_key').val()).end()
                        .serialize();

                $.ajax({
                    url:'iframe_upload.php',
                    type:'POST',
                    data: sPost,
                    success : function(response){
                        manageIframeResponse();
                    },
                    dataType : 'json'
                });
            },

            setup_crop : function (){

                var that = this;
                if (this.jcrop_api === null) {
                    this.form = this.upl_cont.find('form#jcrop-coords-f').get(0);
                    this.upl_cont.find('#jcrop-menu2>a').click(function(){ that.send_form();return false; });
                    this.updateForm = function (){
                        var c = arguments[0];
                        that.form.x1.value=c.x;
                        that.form.x2.value=c.x2;
                        that.form.y1.value=c.y;
                        that.form.y2.value=c.y2;
                        that.form.h.value=c.h;
                        that.form.w.value=c.w;
                    }

                    this.oSettings.onSelect = this.updateForm;
                    if (typeof (this.trueSize) !== 'string' && $.isArray(this.trueSize)){
                        $.extend(this.oSettings,{'trueSize':this.trueSize});
                    }
                    $('#facebox #logo-container-d>img').Jcrop( this.oSettings, function(){

                        that.jcrop_api = this;
                        var _x1 = (that.logo_img.true_width*0.1).toFixed();
                        var _y1 = (that.logo_img.true_height*0.1).toFixed();
                        var _x2 = (that.logo_img.true_width*0.9).toFixed();
                        var _y2 = (that.logo_img.true_height*0.9).toFixed();
                        that.jcrop_api.setSelect([0,0,that.logo_img.true_width,that.logo_img.true_height]);
                        that.jcrop_api.animateTo([_x1,_y1,_x2,_y2]);
                    });
                }
            },

            updateForm : function (){},

            oSettings : {
                onSelect:'',
                onChange:'',
                keySupport: false,
                bgColor:bgColor,
                aspectRatio:1,
                minSize:[0,0]
            }
        }
    }();

    $(document).bind('afterClose.facebox', function() { 
        if (aps.jcrop_api !=null) {
            aps.jcrop_api.destroy();
            aps.jcrop_api=null;
        }
    });
});

```