Hi there, I've just started with the Google Maps API and I'm already
hitting walls, I'm successfully displaying my markers like I need them,
but when i'm trying to add an Info Window that is parsed from the XML
file it always fails.
I've looked on the forums for posts with the same topic, but haven't
found any that explained what I needed.

My XML File is Formatted as such :
<markers>
  <marker lat="29.431434" lng="-98.491051">
  <uri>http://www.ymcasatx.org/</uri>
  <name>Association Office</name>
  <address>1123 Navarro</address>
  <phone>210-246-9622</phone>
  </marker>
  <marker lat="29.536861" lng="-98.425538" desc="Northeast YMCA">
  <uri>http://www.ymcasatx.org/notheast</uri>
  <name>Northeast YMCA</name>
  <address>1123 Navarro</address>
  <phone>210-246-9622</phone>
  </marker>
</markers>

and my script that calls the XML file is as such:

    <script type="text/javascript">
// Center the map on Palo Alto
var map = new GMap(document.getElementById("map"));
map.addControl(new GSmallMapControl());
map.addControl(new GMapTypeControl());
map.centerAndZoom(new GPoint(-98.491051, 29.431434), 7);
// Create our "tiny" marker icon
var icon = new GIcon();
icon.image = "http://www.ymcasatx.org/images/map-icon.png";
icon.shadow = "http://www.ymcasatx.org/images/map-icon-shadow.png";
icon.iconSize = new GSize(12, 20);
icon.shadowSize = new GSize(22, 20);
icon.iconAnchor = new GPoint(6, 20);
icon.infoWindowAnchor = new GPoint(5, 1);

var request = GXmlHttp.create();
request.open("GET", "data.xml", true);
request.onreadystatechange = function() {
  if (request.readyState == 4) {
    var xmlDoc = request.responseXML;
    var markers =
xmlDoc.documentElement.getElementsByTagName("marker");
    for (var i = 0; i < markers.length; i++) {
      var point = new
GPoint(parseFloat(markers[i].getAttribute("lng")),

parseFloat(markers[i].getAttribute("lat")));

      var marker = new GMarker(point, icon);
      map.addOverlay(marker);
    }
  }

request.send(null);
    //]]>
    </script>

Now I dont know where to begin, I know I need to load the XML data into
a html variable, then call that variable with a listener event.

My question is can anyone point me to an already existing file where
this is done, or tell me how I can incorporate all this into my file...

Your help is GREATLY appreciated.

Thank you.

Chris

you basically just need to call openInfoWindowHtml(htmlStr) on your
markers.  take a look at the code on my site at
http://www.seattlecityphotography.com/personal/diving .

it gets data from an xml file and puts it into the info window.  i'm
using attributes in my xml instead of child nodes, but its the same
thing.

format your XML like this...
<markers>
  <marker
       lat="29.431434"
       lng="-98.491051"
       desc=""
       uri="http://www.ymcasatx.org/"
       name="Association Office"
       address="1123 Navarro"
       phone="210-246-9622"
  </marker>

  <marker
       lat="29.536861"
       lng="-98.425538"
       desc="Northeast YMCA"
       uri="http://www.ymcasatx.org/nothea­st"
       name="Northeast YMCA"
       address="1123 Navarro"
       phone="210-246-9622"
  </marker>
</markers>

Hope that helps!
send an email if it does not!

The old XML attributes vs. elements discussion, yeah.

I never really cared one way or the other.  I started out putting
everything in attributes, as sdaviswnec suggests.  However I was having
some problems with HTML entities such as &eacute; - I could get them
working right on Firefox and MSIE but not in Safari; or the reverse;
but I couldn't get it working in all three browsers with the same code.

Then I switched to using elements for string-like data, while still
using attributes for the numeric lat and lon.  Now it works right in
all the browsers.  This is probably a fixable bug, perhaps in Google's
code, but for now it's a valid argument in favor of elements.

As for how to read element strings into your JavaScript code, you can
copy from my app: http://www.acme.com/jef/paris_forts/  It's probably
not even close to the best way of doing this, it was just the first
thing I tried and it works.

Thanks for your help guys,

I've gotten this far with your advice, but i can't seem to figure out
why when i click on any of the markers it brings me to the last one on
the XML file

can you tell me how i can get the info window to be distinct to each
marker ?

var request = GXmlHttp.create();
request.open("GET", "data.xml", true);
request.onreadystatechange = function() {
  if (request.readyState == 4) {
    var xmlDoc = request.responseXML;
    var markers =
xmlDoc.documentElement.getElementsByTagName("marker");
    for (var i = 0; i < markers.length; i++) {
          var html = "Branch Name <b>" + markers[i].getAttribute("desc") +
"</b>";
      var point = new
GPoint(parseFloat(markers[i].getAttribute("lng")),

parseFloat(markers[i].getAttribute("lat")));
      var marker = new GMarker(point, icon);
                GEvent.addListener(marker, "click", function() {
                        marker.openInfoWindowHtml(html);
                });
          map.addOverlay(marker);

    }
  }

It's because you inlined the function-closure instead of putting it in
a separate  function.  Look at the examples, including my Paris Star
Forts one.  The function-closure must be created inside a separate
function or else it doesn't work properly.  Doesn't make sense but it's
a fact nevertheless.

Hello,

I'm also new in Google Gmail, and i've got a problem with Markers, it's
seems that in "SAT" mode, some of my markers simply doesn't show but If
i switch to the "MAP" mode, they all there .. so ? What wrong whith my
code ?

Page :
http://www.mustangpassion.com/Forum/user_map2.php

Xml:
http://www.mustangpassion.com/Forum/user_map_xml.php

Thanks to : Jef Poskanzer for the code.

Rem: My goal is to map my forum member on a world map, based on a
"huge" free lat/lng Database of all cities of the world.