[thelist] XML hierarchical menu

[Chris Marsh]

Dear all

Specific questions are at the bottom of the post, after all
explanations.

I am producing an ASP class that generates a vertical navigation bar.
Some of the links have sub-sections, and sub-sub-sections. An example
would be:

<ul>
	<li>
		Link 1
	</li>
	<li>
		Link 2
		<ul>
			<li>
				Sub-link 1
			</li>
		</ul>
	</li>
</ul>

I want to pull the information for the links from an XML document. An
example would be:

<?xml version="1.0" encoding="ISO-8859-1"?>
<wt:menu xmlns:wt="http://www.wt.co.uk">
	<wt:item url="/wt/home.asp">
		Home
	</wt:item>
	<wt:item url="/wt/news.asp">
		News
	</wt:item>
	<wt:item url="/wt/expertise.asp">
		Expertise
		<wt:item url="/wt/expertise/consultancy.asp">
			Consultancy
		</wt:item>
	</wt:item>
</wt:menu>

I figured that the way to go about formatting this XML into the menu
system would be something like this (pseudo-code):

Function FormatLink(Value)
	Format into valid HTML
End Function

Function GetNextLevel(Root_Position)
	Get collection of nodes 1 level down from Root_Position
	For I = 0 To Len(collection of nodes)
		GetNextLevel = GetNextLevel & FormatLink(node(i).Text)
		If node(i) has child nodes
			strSubLevel = GetNextLevel(node(i))
			GetNextLevel = GetNextLevel & strSubLevel
		End If
	Next
End Function

Function CreateMenu()
	Load XMLdoc
	CreateMenu = GetNextLevel(Root_Position)
End Function

My questions are as follows:

1) Does this seem a logical way to go about creating what I want?

2) If the answer to (1) is "yes", does anyone know of an online class
reference giving me the methods etc. to achieve this? I have googled and
MS'd already, but haven't been able to locate an exhaustive reference.

Many thanks in advance

Chris Marsh