ii_easel_utilities.js

This function provides the system to allow an application to wait for a complex application to load and initialise. Test_fn is called repeatedly until it returns true, or the user gives up. When it returns true (indicating that everything has checked out), on_loaded_fn is called.

How many times to try to see if everything has loaded. After this many 1/2 second pauses the system will ask the user if they want to continue to wait.