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dhtmlxTree, dhtmlXTreeFromHTML and getUserData

Hi,

I have created a dhtmlxTree from an existing php class which returns my menu as a series of nested unordered lists:

<ul>
<li id='1'>menu 1
<ul>
<li id='2'>sub item 1</li>
<li id='3'>sub item 1</li>
<li id='4'>sub item 1</li>
<li id='5'>sub item 1</li>
</ul>
</li>
<li id='6'>menu 2 etc......

Is it possible to include userdata to be returned with the getUserData() method (such as href and class) with this approach by including a tag(s) in my HTML? I have had a look in the reference section and can not find a way to do this without rewriting my php.

Unfortunately, when initialized from HTML, tree can't parse any extra data except of item's text.