DeviantART Chat Application Clone

I need a clone of the DeviantART chat application. To see an example of this: [login to view URL] Click on any one of the chat room links or visit this: [login to view URL] I believe they are using a flash plug-in to communicate with the server but all of the chat room controls are basic HTML controls. I am not sure how they do it but they pull it off very smoothly with seamless chatting. I need something that clones that chat client with server side enabled. For example, I would like the chat rooms and the users to load from some tables in a database. I would also like to keep a transaction log of each chat room in the database. Needless to say, it should as have role management capabilities. Similar to IRC chat rooms, there should be admins, moderators and normal users. Personally, I prefer platform independent software, especially for client-side programming. I do not want the users to download any additional plug-ins than what most users have. Therefore, I believe flash is the way to go, since most people on the internet have flash anyway. However, I want not want the chat interface to be flash. The other way around this is via AJAX. However, I have yet to see an AJAX chat client that is as seamless as this one. Again, I like the use of standard HTML controls. For server-side, the technology should also be platform independent. In other words, the chat room client should be able to run on any server Windows or Linux and have the ability to communicate to any databases MS SQL or MySQL, IIS or Apachi, the platform should not matter. Bid if you are a serious programmer. If you are willing to bid for the project, I would like for you have a plan for the project. Please inform me about the approach you are going to take to complete this task. Starting from the technology you are going to use to timeline of delivery.