text: $( document ).ready( function(){
    $.ajax({
      "url" : "data/ch12_eg01.xml", 
  	"dataType" : "xml",
      "success" : function( data ){
  		var title = $( data ).find( "title" ).text();
  		$( "#container" ).html( "<h1>"+ title +"</h1>" );
        }
    });
  });