iOS, Android, Blackberry & Windows Phone app for a web page

I want a simple app to display the web page [login to view URL] in the app. As in it should be like usual web app (that is in iPhone), the only difference would be that it should be published in app stores and app markets of all the mobile phone. I already have an mobile based version of my website, I just want it to be included in the app. You should get it published into various mobile app stores also.