I have a file that is supposed to do a very long task. Right now it's set to refresh the page very often and work by elimination until the task is done. I'm looking for a better solution that would implement a progressbar, ajax or not and look a little better than this old and boring method. I'm not interested in setting the time limit at a very high level and simply showing a loading bar. Something more professional that would keep my server at a lower level of resource usage. Any ideas?