Hello all!

I have a bit of XML I am parsing and populating a drop-down menu with. I have some simple rules for those drop-downs but the XML I'm pulling is giving me close but not accurate results. I'm just learning php/ajax/jquery and having allot of fun but this has stumped me for a while since my javascript isn't that strong.

Here is a sample of the XML I'm parsing.
Code:
<PlanetaryInteraction>
	<Component>
		<name>Aqueous Liquids</name>
		<cycle>15</cycle>
		<structureRequired>Extractor</structureRequired>
		<planet>Barren</planet>
	</Component>
	<Component>
		<name>Water</name>
		<cycle>30</cycle>
		<structureRequired>Basic Industry Facility</structureRequired>
		<output>20</output>
		<Require>
			<quantity>3000</quantity>
			<component>Aqueous Liquids</component>
		</Require>
	</Component>

</PlanetaryInteraction>
The XML above has been edited to show you the problem I have. My javascript code is gabbing these components, but I only want components that have NO <Require> children! And then the later-half of the form I want to do the Opposite and only show components that HAVE <Require>

Below is a snippet of the javascript that grabs the first drop-down's options..

Code:
 <script language="JavaScript1.5" type="text/javascript"> 
$(document).ready(function(){
			$.ajax({
				type: "GET",
				url: "xml/PlanetaryInteraction.xml",
				dataType: "xml",
				success: function(xml) {
				
					var select = $('#pi_extraction_1');
					$(xml).find('Component').each(function(){
					 if ($(this).find('Require').length) { 
					 // Has requirements, do not list
    					
					  } else {
						var name = $(this).find('name').text();
						select.append("<option class='item'>"+name+"</option>");
					  }  
	
					});
					select.children(":first").text("").attr("selected",true);

...
Now the focus of my problem is this bit:

Code:
 if ($(this).find('Require').length) { 
					 // Has requirements, do not list
					  } else {
						var name = $(this).find('name').text();
						select.append("<option class='item'>"+name+"</option>");
					  }

the results I currently get in the drop-down look like this:

Aqueous Liquids
Aqueous Liquids

I want just:

Aqueous Liquids

I suspect its grabbing the component name from both //PlanetaryInteraction/Component/name as well as //PlanetaryInteraction/Component/Require/component

How can I fix this bit of javascript?

Any suggestions greately appreciated and I can provide more code upon request!

Thanks!!