[javascript] Marker content (infoWindow) Google Maps

I'm trying to add infoWindow's to multiple markers on a Google Map. The closest I have come is to get an infoWindow to display the last address you can see in the array, on all markers. The bit of code I have pasted below does not work, I get an "Uncaught TypeError: Cannot read property '4' of undefined". I'm sure this is a scope issue, but I'm going round in circles here and could do with some help:

var hotels = [
            ['ibis Birmingham Airport', 52.452656, -1.730548, 4, 'Ambassador Road<br />Bickenhill<br />Solihull<br />Birmingham<br />B26 3AW','(+44)1217805800','(+44)1217805810','[email protected]','http://www.booknowaddress.com'],
            ['ETAP Birmingham Airport', 52.452527, -1.731644, 3, 'Ambassador Road<br />Bickenhill<br />Solihull<br />Birmingham<br />B26 3QL','(+44)1217805858','(+44)1217805860','[email protected]','http://www.booknowaddress.com'],
            ['ibis Birmingham City Centre', 52.475162, -1.897208, 2, 'Ladywell Walk<br />Birmingham<br />B5 4ST','(+44)1216226010','(+44)1216226020','[email protected]','http://www.booknowaddress.com']
        ];

        for (var i = 0; i < hotels.length; i++) {
            var marker = new google.maps.Marker({
                position: new google.maps.LatLng(hotels[i][1], hotels[i][2]),
                map: map,
                icon: image,
                title: hotels[i][0],
                zIndex: hotels[i][2]
            });

            var infoWindow = new google.maps.InfoWindow();

            google.maps.event.addListener(marker, 'click', function () {
                var markerContent = hotels[i][4];
                infoWindow.setContent(markerContent);
                infoWindow.open(map, this);
            });
        }

Thanks in anticipation.

Although this question has already been answered, I think this approach is better : http://jsfiddle.net/kjy112/3CvaD/ extract from this question on StackOverFlow google maps - open marker infowindow given the coordinates:

Each marker gets an "infowindow" entry :

function createMarker(lat, lon, html) {
    var newmarker = new google.maps.Marker({
        position: new google.maps.LatLng(lat, lon),
        map: map,
        title: html
    });

    newmarker['infowindow'] = new google.maps.InfoWindow({
            content: html
        });

    google.maps.event.addListener(newmarker, 'mouseover', function() {
        this['infowindow'].open(map, this);
    });
}