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Someone can explain me this code..

Hi,
I found this code somewhere and even though everything is working great I will love to learn what is going on behind the scene

Doe someone over there can explain me step by step what is this code doing?
I am trying to learn JQuery and there is not better way that test it than trying it.

So please if there is someone out there that will love to share their knowledge... I am willing to listen.
I am a rocky with jquery.

So far I know that this is an Accordion with radio button....thats it!!! how jquery is catching the trigger from the radio button and how doesn't know that which one to catch...

Thank you

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script src="js/jquery-1.3.2.min.js" type="text/javascript"></script> 
    
<script type="text/javascript">
    $(function() {
        $('.chartConfiguratorThingy')
			.show()
			.find('.typeOptions>.fieldGroup>input[type=radio]')
				.bind('updateDependencies', function() {
				    if ($(this).is(':checked')) {
				        $(this).next().next(':hidden').slideDown(function() { $(this).find('input,select').removeAttr('disabled'); });
				    }
				    else {
				        $(this).next().next(':visible').slideUp(function() { $(this).find('input,select').attr('disabled', 'disabled'); });
				    }
				})
				.trigger('updateDependencies')
				.click(function() { $('.typeOptions>.fieldGroup>input[type=radio]').trigger('updateDependencies'); })
				.end()
				

    });
</script>    
</head>
<body>
  <form id="form1" runat="server" >
    <div class="chartConfiguratorThingy">	
      <div class="typeOptions">	
				<div class="fieldGroup"> 
					<input type="radio" name="type" id="bar" value="bar" checked="checked" /> 
					<label for="bar" class="radio">Bar</label> 
					<div class="dependencies"> 
						<div class="fieldGroup"> 
							<label for="barMargin">barMargin:</label> 
							<input type="text" name="barMargin" id="barMargin" value="1" /> 
						</div> 
						<div class="fieldGroup"> 
							<label for="barGroupMargin">barGroupMargin:</label> 
							<input type="text" name="barGroupMargin" id="barGroupMargin" value="10" /> 
						</div> 
					</div> 
				</div> 
				<br /><br />
				<div class="fieldGroup"> 
					<input type="radio" name="type" id="line" value="line" /> 
					<label for="line" class="radio">Line</label> 
					<div class="dependencies"> 
						<div class="fieldGroup"> 
							<label for="lineWeight">lineWeight</label> 
							<input type="text" name="lineWeight" id="lineWeight" value="4" /> 
						</div> 
					</div> 
				</div> 

	  </div>
	</div>	
  </form>
</body>
</html>

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