Hi Andrew,

Thank you for your reply!

I'm a bit puzzled...GDownloadUrl is asynchronous, yes...
Still a newbie and I need to ask...my callback-function in this
case...what is that?

I have the serverside-script (PHP) that generates the correct XLM-
structure. Now I need to read that and display it...
Please push me in the correct direction...I'm a bit lost in the big
Map-forrest...:-)
And yes, I'm a big fan of Mikes Map-tutorial.

Thanks!

/Nimrod

On May 14, 11:32 am, Andrew Leach <[email protected]>
wrote:
> On May 14, 10:07 am,nimrod<[email protected]> wrote:
>
>
>
> > Hmmm...next challenge is that FF complaints on:
> > var markers = xml.documentElement.getElementsByTagName("marker");
> > and says that "XML is not defined". I reverified that the XML is
> > printed as it should and it is ok.
>
> > Do you (or anybody else) have a suggestion?
>
> GDownloadUrl is asynchronous. That means it gets on with the job
> behind the scenes and then calls the "callback function" to deal with
> the results when it's finished. Your callback function defines the
> variable "xml".
>
> Once GDownloadUrl has started to do its stuff, the main execution
> carries on in the foreground. The next line tries to use "xml", which
> is only defined in the callback function, and that hasn't run yet.
>
> You need to do everything with "xml" **inside** the callback function.
>
> Mike has an explanation of asynchronous code in his 
> tutorialhttp://econym.org.uk/gmap
>
> Andrew
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