While Facebook indicates that current Static FBML and FBML tab applications will continue to function for now, it strongly encourages everyone to move from FBML to using iFrame applications.
What is an iFrame application?
An iFrame application you allows you to embed an external Web page in your Facebook Page tab (in the new Page layout, "tabs" have been moved from the top of the page to the left column.).
This is the first Video produced by imthy.com
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Note : If You feel Hard with HTML/PHP, Try Simple Static HTML iFrame Tab(Third Party Application) Here