QUOTE (Unka Josh @ Jul 15 2010, 12:00 PM)

In the Tilesets tab, you'll note a series of buttons to one side. One of these is "Priority."
Hit that button, look at some other tilesets, and you'll see that things that you could walk behind have a raised priority.
Thus, just go to the tileset that you're using and change the Priority of the trees. No problem.
Thanks

What should we have done without you pros?