TreeView Control

I am just learning RubyRails.....

I am simply trying to add a tree view control. I want to use the YUI treeview control.

Here is my code

<% for tax in @taxonomies%>      <%=tax.parent-%> <%=tax.description-%> <br>               <script type="text/javascript">         addNode(node_id,description)     </script> <% end %>

I have a javascript that will add a node. My question is...how do I pass the data I get from the ruby database loop to the javascript?