Require a tree menu for Joomla with the following features:
1. expandable and collapsible folders (via clicking plus and minus signs that appear to the left of the folder)
2. navigating the tree menu via expanding and collapsing folders should not force a page reload - this should occur when a folder or node element of the tree menu is selected.
3. folders click-able and the linked article should be displayed in the main area of the web page
4. the tree menu should be kept in sync with the displayed page when the pages are navigated using joomla's page navigation feature or other page navigation extensions like jnavigation.
5. ideally built by reading a mod_mainmenu instance
6. css styling of the tree menu
7. proper indenting and text wrapping of menu items at nested levels
12 freelancers are bidding on average $1915 for this job
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