[Google Maps API v3] GDownloadUrl and variable scope

[Garrett Lynch]

Hi

Simple question to do with variable scope, when using something like 
GDownloadUrl how do you access a gloabal variable i.e. populate the array in 
the example below?  Do I pass in the variable name, use return?  Always get 
confused about this with inner functions.  Thanks in advance.

Garrett


//hold all ids
var latlongids = new Array();


var test = GDownloadUrl("map.osm.xml", function(data, responseCode) {

    //if ok
    if (responseCode == 200)
    {
        var xml = GXml.parse(data);

        var way = xml.documentElement.getElementsByTagName("nd");

        for (var i = 0; i < way.length; i++)
        {
                var id = way[i].getAttribute("ref");

                latlongids[i] = id;
        }
    }
    else if(responseCode == -1)
    {
        alert("Data request timed out. Please try later.");
    }
    else
    {
        alert("Request resulted in error. Check XML file is retrievable.");
    }
});

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