It’s very simple to link to an iFrame with Joomla by using Wrapper and the menu item. Below are the steps to follow in order to link to an iFrame through the Joomla administrator:

1. fire up you admin
2. select Menu => mainmenu (your choice)
3. select New
4. select radio button Wrapper under Miscellaneous
5. select Next
6. add link Name
7. add Wrapper Link (your iframe src)
8. select Save

That’s it. You’re menu links are now pulling in the target url into an iFrame using Joomla’s Wrapper.