html5 Document Viewer

We are looking for a developer who will work with us a document viewer using html5. This viewer/reader can read word/excel/pdf/powerpoint and other common files. Using flash its possible I know its possible and code available. However we want using html5 so it works on Ipad also. We do understand we need to continue work on many version of word files to test and it may require. I'm looking for someone who has done html5 work and confident they can deliver this. Please do some research and see if you can do it. [login to view URL] is using it now and I'm sure it can be done.