<script src="http://connect.facebook.net/en_US/all.js"></script>
<script>
FB.init({
appId:'APP_ID',
cookie:true,
status:true,
xfbml:true
});

function FacebookInviteFriends()
{
FB.ui({
method: 'apprequests',
message: 'Your Message diaolog'
});
}
</script>


//HTML Code
<div id="fb-root"></div>
<a href='#' onclick="FacebookInviteFriends();">
Arkadaşlarını Davet Et !
</a>