You may or may not notice, there have been a few new features added.

1. The id list on the left side supports folding now. But because the code has to been regenerated, currently only new uploaded projects support these.
2. The other is when searching for a identifier in a source file, javascript will try first to find the identifier in current file. If found, the remote server will not be bothered.
   

With these features added, a few new bugs exposed. I'll fix them once I get time.

And I realize there are a few features that are critical to the usability, which are:

1. Currently, backward/forward don't work because of AJAX. It's unbearable.
2. When searching for identifier's reference, the caller function name should be presented.
3. When doing asynchronous operation, there should be an indicator, otherwise, users will be confused.

Well, they are on top of my todo list now:)