Im currently doing this to create markers for my google map.

function createMarker(posn, title, html) {
            var marker = new google.maps.Marker({ position: posn, title: title, draggable: false });
            marker['infowindow'] = new google.maps.InfoWindow({ content: html });

            infoWindows.push(marker['infowindow']);
            google.maps.event.addListener(marker, "click", function () {
                for (i = 0; i < infoWindows.length; i++) {
                    infoWindows[i].close();
                }
                this['infowindow'].open(map, this);
            });
            return marker;
        }

im not happy with the for loop, for closing the markers, i know something similar to this can be done by using one refernce:

if (infowindow) infowindow.close();

the reason I am using code like above is because i am doing something like
markers[myPoint]['infowindow'].open(map, markers[myPoint]); else where, (myPoint is a number).

how can i avoid this for loop to close open infowindows and do it the nice way?