Add/Modify smarty php code on web pages and create new pages

have a website need to add & modify & fix smarty php code on few web pages and create few new web pages. Skill include: php, smarty php, Mysql, Ajax, Jquery. My script is media xxx script, you can see the demo here: [login to view URL] Please kindly see the following requirement of my site that what i need to coding.: 1) Create notification area like facebook 2) Fix typing problem in textarea. 3) Fix "search message" problem on inbox, starred and sent pages. 4) Create embed video function and api & feeds on "Webmaster" page.(I have api example and feeds idea.) API/Feed: This is the redtube example API link: [login to view URL] It just a example, i don't want exactly same like redtube, and you must include clear & easy explanation in this API like redtube too. 5) Fix header menu css. 6) Fix flash video player "right click" option. I want change the "[login to view URL]" & its link to my "domain name" and my website's link. And add a Flash Intro into my flash player before the video play. Please take a look [login to view URL] videos you will understand what i mean. 7) "Reply" comments function on video, blog and photo pages.(I have my own idea, but you must provide your idea to me too.) 8) All "recent activities" like facebook on wall page. You do not have to create database table for me. All database functions included. You just have to pull the results and display it on the wall page. 9) Fix "mutual friends" coding on profile page and standalone page. Please make it functional. I created half way. 10) Create Auto playlist bar like Youtube. 11) Create news feed like facebook on profile page. 12) Facebook Chat. 13) Create Mobile content site(eg.: [login to view URL]) with member login function.