Additional functionality for iPad, iPhone Ebook reader

We are developing an iPad, iPhone app for ebook reader which loads ePub files(XHTML). We already have application code for rendering ePub file. We would like you to add functionalities like 1. Highlight Text with a color 2. Add note any where in the Text. 3. Search Text. We are using UIWebview to render the XHTML files. The functionalities should be similar to that in iBooks or Amazon Kindle. We need you to add these functionalities to our App. If you have done apps for eBooks, Please provide details and samples of them. We are looking for someone who is available to discuss more about project details on skype and finishes their work in a timely manner.