LightLoader allows you to track multiple file uploads using AJAX.

Features:
- Really small size of download.
- No reliance on Prototype.js
- Full JavaScript Object Notation - fewer global variables to mess up other code
- You can actually STOP the requests made to monitor the progress of the file uploads. Scripts that rely on Prototype are next to impossible to stop.
- This script automatically checks for potentially harmful file uploads.
- Also does cleanup of old files that may not be able to deleted immediately (optional, uncomment in source code).
- Includes a handy way of sending and recieving full OBJECTS (not query strings or XML) using JSON.
With traditional methods of file uploading, your visitors have to stare at the form they just submitted - or a blank page, while the data uploads. With this AJAX file upload script, your visitors do not have to wonder if the page is working or not.

They will know as the progress bars update themselves as the file uploads. There can potentially be an unlimited number of uploads - the only real limit is the visitor's upload speed.

This script also checks the types of files being uploaded so that users cannot upload files that would potentially harm your server.