Sign In using Facebook Twitter Accounts and Friends Inviter by Tam2000

I need to create a login option using facebook, twitter, gmail and yahoo accounts along with my existing login system (PHP/MySQL platform). Also would like to have the user capability to invite contacts from their email addresses like in http://openinviter.com/... (Budget: $30-$250 USD, Jobs: AJAX, Javascript, MySQL, PHP, Script Install)
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