Google Gadgets, Web Widgets and AJAX
I can create both Google Gadgets and other styles of web widgets.
See some website examples.
Your site visitors will be able to upload files, pictures or documents to your website.
You can log into your site and instant edit content.
If you need to see an example that does not appear here, contact me. I can normally create an example of what you want and either post it here or meet with you.