Looped InfoBox with closure on Google Maps API V3

    function initialize() {
        var mapOptions = {
          center: new google.maps.LatLng(35.542284,-76.856),
          zoom: 11,
          mapTypeId: google.maps.MapTypeId.ROADMAP
        };
        var map = new google.maps.Map(document.getElementById("map_canvas"),
            mapOptions);

        $(document).ready(function(){
            $.getJSON('test.json', function(data) {

                    for (i = 0; i < data.length; i++) {
                        var item = data[i];
                        var myLatlng = new google.maps.LatLng(item.lat, item.longs);

                    var marker = new google.maps.Marker({
                            position: myLatlng,
                            map: map,
                            title: item.name,
                            icon: item.type + ".png"
                        }); // end add new marker
                    attachBox(marker, i)
                    } //end for loop

                var ib = new InfoBox();

                function attachBox(marker, i) {
                    google.maps.event.addListener(marker,'click',(function(marker, i) {
                        var boxText = document.createElement("div");
                            boxText.style.cssText = "border: 1px solid black;";
                            boxText.innerHTML = item.name;

                            var myOptions = {
                            content: boxText,
                            boxStyle: {
                                opacity: 0.75,
                                width: "280px"
                                    },
                            closeBoxMargin: "12px 4px 2px 2px",
                        };
                            return function() {
                                ib.setOptions(myOptions)
                                ib.open(map, this);
                            }
                    })(marker, i));
                } // end attachBox
            }) // end getJSON
        }); // end jQuery
    } // end initialize