Keyword Search Javascript Web Application Needed

I need a keyword search web application that can follow a specific process based on user input. I describe the process in detail here: [login to view URL] Important Notes: 1. This must be a web app that can be accessed on our servers using a web browser 2. The actual processing and queries must occur client side - in the users browser and from their IP address. We can't have any users' queries coming from our server. 3. The app would need to provide a final list of keywords in CSV or TXT format, preferably with number of searches per month for each keyword as well.