New Event application

We are looking to do a mobile event application that would be a mobile web site that runs on the major platforms Android, Blackberry, and iPhone. The mobile event app is what an organization or company would use to install on all their tradeshow or event staff that is attending. The app. would be customized for the tradeshow or conference they will be attending. I will get more into what this means but wanted to give an introduction to what it is we are looking for. Here is a list of features the client is looking for Internal Attendee List with Cell Phone and email addresses admin - from a CMS the admin would enter in the attendee information user - from an icon driven menu a user would click on Attendees icon where they could see the full list of attendees on their contact information. Special Event Information – breakfasts, receptions, etc, time, date, locations admin - from a CMS the admin would enter in these events in a ui that could be like a calendar user - from an icon driven menu a user would click on the Special events icon and see detailed information in a day view or event labeled less detailed week view Booth Conference Room Schedule – to include time, date, location, meeting subject, meeting attendees and any related documents admin - from a CMS the admin would enter in these conference events in a ui that could be like a calendar user - from an icon driven menu the user would choose the conference schedule icon view the booth conference room and see detailed information in a day view or event labeled less detailed week view Executive Schedules – to include meetings, times, dates, locations, related documents admin - from a CMS the admin would enter in the executive schedules in a ui that could be like a calendar Also the admin will be entering notes regarding events real time and during the show. user - from an icon driven menu the user would select the executive schedule icon and view executive schedules and see detailed information in a day view or event labeled less detailed week view. Plus the user could go back and view the notes entered in by the admin on past executive events. White Papers/ Executive Meeting Memos – with the caveats we talked about on the phone admin - from a CMS the admin would upload white papers that could later be accessed and/or downloaded by users. user - from an icon driven menu the user would click on the white papers and read them or download to their phone. lodging – hotel address, fax, , etc admin - from a CMS the admin would enter in this information and possibly include a Google maps and add things such as local restaurants, bars and other local interests. user - would click on the lodging icon and be able to view the local attractions and also have reference information to their hotel address, phone #, fax# etc.. travel - flights, taxi's etc.. admin - from a CMS the admin would enter in flight data for the attendees user - would click on the travel icon and view their flight data and any taxt information entered in by the admin. Booth Layout/Hall layout admin - from a CMS the admin upload the booth layout user - would click on the layout icon and view maps that were uploaded of the booth and the hall. other features: Would need to somehow have the application customized for a single persons itinerary or schedule. So if I am attending the tradeshow I can view my schedule as well. Also would need the ability to edit an make changes. Also would like to have the opportunity to push real-time updates out from the show floor, as the schedule changes minute-by-minute. Also would like to have notifications that make the phone beep to remind you of upcoming appointment. We would supply any ofthe graphics needed for the project. We consider using native app for each O/S but also will consider a platform like Titamnium or phonegap as well