Ok, after 2 days of staring at this code, I have finally figured out how to have the nodes expand when you just "single" click on the name of the
node not just the "+".
This is my first post so please be gentle.
Inside tree.js you will find a function called "item_init()".
Inside this function you will see a very long "return" statement.
Inside this return statement you will see various events such as onmouseover/onmouseout and then onclick and ondblclick.
ondblclick="trees[' + this.o_root.n_id + '].toggle(' + this.n_id + ')"
What you want to do is to highlight and copy everything in between the double quotes after ondblclick=.
What you want to have copied is:
trees[' + this.o_root.n_id + '].toggle(' + this.n_id + ')
Now, what you need to do is to paste this code into the event right before "ondblclick", which is "onclick". After the paste add a semicolon and a space before the code that was already there.
What you want is your "onclick" call to look like this:
onclick="trees[' + this.o_root.n_id + '].toggle(' + this.n_id + '); return trees[' + this.o_root.n_id + '].select(' + this.n_id + ')"
So now the node will be selected and open on a single click.
Hope this helps someone!