Google Maps Api V3 Zoom links in infowindow not working - google-maps

Question

I am building a store locator using php sql and javascript. I've done this tutorial https://developers.google.com/maps/articles/phpsqlsearch_v3 and got it working. I am trying to implement zoom in/out links on the infoWindows, for when the user clicks a marker. Its not working, in FireFox I am getting no errors in the console. In Chrome I am getting Uncaught TypeError: Object # has no method 'setCenter'
Ive been searching the forums but have been unable to find a solution. Sorry I dont have a version online to look at, working locally. Below is the script I am using.
var map = null;
var markers = [];
var infoWindow;
var locationSelect;
//On page load Create a google map in #map
//Set default cordinates & Map style to roadmap
function load() {
var myOptions = {
zoom: 8,
center: new google.maps.LatLng(43.907787,-79.359741),
mapTypeControl: true,
mapTypeControlOptions: {style: google.maps.MapTypeControlStyle.DROPDOWN_MENU},
navigationControl: true,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("map"), myOptions);
infoWindow = new google.maps.InfoWindow({
size: new google.maps.Size(150,50)
});
locationSelect = document.getElementById("locationSelect");
locationSelect.onchange = function() {
var markerNum = locationSelect.options[locationSelect.selectedIndex].value;
if (markerNum != "none") {
google.maps.event.trigger(markers[markerNum], 'click');
}
};
}
//Search for LAT/LNG of a place using its address using Google Maps Geocoder
function searchLocations() {
var address = document.getElementById("addressInput").value;
var geocoder = new google.maps.Geocoder();
geocoder.geocode({address: address}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
searchLocationsNear(results[0].geometry.location);
} else {
alert(address + ' not found');
}
});
}
//Clears Prve location, in info box
function clearLocations() {
infoWindow.close();
for (var i = 0; i < markers.length; i++) {
markers[i].setMap(null);
}
markers.length = 0;
locationSelect.innerHTML = "";
var option = document.createElement("option");
option.value = "none";
option.innerHTML = "See all results:";
locationSelect.appendChild(option);
}
//Look for locations near by and loop through all data getting lat & lng of each marker
function searchLocationsNear(center) {
clearLocations();
var radius = document.getElementById('radiusSelect').value;
var searchUrl = 'http://localhost:8888/starward/wp-content/themes/starward/map_request.php?lat=' + center.lat() + '&lng=' + center.lng() + '&radius=' + radius;
downloadUrl(searchUrl, function(data) {
var xml = parseXml(data);
var markerNodes = xml.documentElement.getElementsByTagName("marker");
var bounds = new google.maps.LatLngBounds();
for (var i = 0; i < markerNodes.length; i++) {
var name = markerNodes[i].getAttribute("name");
var address = markerNodes[i].getAttribute("address");
var distance = parseFloat(markerNodes[i].getAttribute("distance"));
var zoom = 18;
var latlng = new google.maps.LatLng(
parseFloat(markerNodes[i].getAttribute("lat")),
parseFloat(markerNodes[i].getAttribute("lng")));
createOption(name, distance, i);
createMarker(latlng, name, address,zoom);
bounds.extend(latlng);
}
map.fitBounds(bounds);
map.setZoom(11);
// map.setCenter(center);
locationSelect.style.visibility = "visible";
locationSelect.onchange = function() {
var markerNum = locationSelect.options[locationSelect.selectedIndex].value;
google.maps.event.trigger(markers[markerNum], 'click');
};
});
}
//Creates marker on the map
//Adds event for user when they click address info pops up
function createMarker(latlng, name, address, zoom) {
//var html = "<b>" + name + "</b> <br/>" + address
// add the zoom links
var html = "<b>" + name + "</b> <br/>" + address
html += '<br>Zoom To';
html += ' [+]';
html += ' [-]';
var marker = new google.maps.Marker({
position: latlng,
map: map
});
google.maps.event.addListener(marker, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, marker);
});
marker.MyZoom = zoom;
markers.push(marker);
}
function createOption(name, distance, num) {
var option = document.createElement("option");
option.value = num;
option.innerHTML = name + "(" + distance.toFixed(1) + ")";
locationSelect.appendChild(option);
}
//Look up XML sheet to get data
function downloadUrl(url, callback) {
var request = window.ActiveXObject ?
new ActiveXObject('Microsoft.XMLHTTP') :
new XMLHttpRequest;
request.onreadystatechange = function() {
if (request.readyState == 4) {
callback(request.responseText, request.status);
}
};
request.open('GET', url, true);
request.send(null);
}
function parseXml(str) {
if (window.ActiveXObject) {
var doc = new ActiveXObject('Microsoft.XMLDOM');
doc.loadXML(str);
return doc;
} else if (window.DOMParser) {
return (new DOMParser).parseFromString(str, 'text/xml');
}
}

Answer 1

It works for me in both IE and Firefox. Although to me the behavior makes more sense if I set the center for the "ZoomTo" link as well:
html += '<br>Zoom To';