how do I get xml-children of specified index

I want to catch a specific id-number in an xml-string and assign the corresponding values to textfields.

In the example below I want to compare a predifined id-number something like this way:
var bookLength=myXML.Book;
for (var i:int; i < bookLength.length(); i++ ) {
if (myXML.Book[i].id==0684826976){
title_TF.text=myXML.Book[i].title;
author_TF.text=myXML.Book[i].author;
}
}

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so that the title_TF and author_TF  is populated with the title (Undaunted Courage) and author (Stephen Ambrose) of the specified id.
How exactly would I do that.  
<Books>
 <Book>
  <id>0553212419</id>
  <title>Sherlock Holmes: Complete Novels and Stories, Vol 1</title>
  <author>Sir Arthur Conan Doyle</author>
</Book>
<Book>
  <id>0743273567</id>
  <title>The Great Gatsby</title>
  <author>F. Scott Fitzgerald</author>
</Book>
<Books>
 <Book>
  <id>0684826976</id>
  <title>Undaunted Courage</title>
  <author>Stephen E. Ambrose</author>
</Book>
<Book>
  <id>0743203178</id>
  <title>Nothing Like It In the World</title>
  <author>Stephen E. Ambrose</author>
 </Book>
</Books>

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petersegoAsked:
Who is Participating?
 
deepanjandasCommented:
As you are using AS3.0 use the e4x parsing:
title_TF.text = myXML.Book.(id == "0684826976").title;
author_TF.text = myXML.Book.(id == "0684826976").author;

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Warm Regards
Deepanjan Das
0
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