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Flash XML variable appending or combining

Say I have the following XML output

<?xml version="1.0"?>
<root>
      <chat>
            <message id="14518">
                  <date>2007-10-06 17:26:33</date>
                  <from>Anonymous</from>
                  <to>ALL</to>
                  <text>test message</text>
            </message>
      </chat>
</root>

And I load it up into my Flash variable chatXML:XML;
Which works fine, Now a new message has been added to the chatrrom

<?xml version="1.0"?>
<root>
      <chat>
            <message id="14519">
                  <date>2007-10-06 17:27:48</date>
                  <from>Anonymous</from>
                  <to>ALL</to>
                  <text>New Message at 5:27 test</text>
            </message>
      </chat>
</root>

Presently I can reload my chatXML variable with the new outpput and add the new message to the display.
Is there a way I can combine the two XML outputs into one variable to retain the old information? And also rather than making my XML output produce all messages each go for a lot of wasted redundancy.

I'm thinking that maybe I could do something like use a new var tempXML and somehow use
newID= tempXML.chat.message.@id
to add
tempXML.chat.message.(@id==newID) to chatXML.chat

Thanks for the help!!

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dban00b

ASKER

Each call to the XML output only gives what is new since the last call.
The appendChild() function worked exactly like I wanted, it even worked in a for-each loop to append all the messages found in tempXML to chatXML

Thanks!!!