1) Script Title: async treeview

2) Script URL (on DD): http://www.dynamicdrive.com/dynamici...suppliment.htm

3) Describe problem:
After extensive searching for a good, easy-to-use asynchronous tree, I think I finally found one! One feature that I saw in other examples is to pop up an animated loading gif or just some text that says "Loading....." while the data is being loaded asynchronously. I am not very experienced with Javascript and cannot figure out how to program this into the script. Can anyone help?

Thanks in advance!