var friendsCurrentRow = 0;

// Visualizzazione amici: indietro
function friendsPrev() {
	friendsCurrentRow = friendsCurrentRow - friendsRowsLimit;
	if (friendsCurrentRow < 0)
		friendsCurrentRow = 0;
	showFriends();
	return false;
}

// Visualizzazione amici: avanti
function friendsNext() {
	friendsCurrentRow = friendsCurrentRow + friendsRowsLimit;
	if (friendsCurrentRow > friendsRows - friendsRowsLimit)
		friendsCurrentRow = friendsRows - friendsRowsLimit;
	if (friendsCurrentRow < 0)
		friendsCurrentRow = 0;
	showFriends();
	return false;
}

// Aggiorna gli amici da visualizzare
function showFriends() {
	for (var i=0; i < friendsRows; i++)
		if ((i >= friendsCurrentRow) && (i < friendsCurrentRow + friendsRowsLimit))
			$("friendsRow-"+i).style.display = '';
		else
			$("friendsRow-"+i).style.display = 'none';
	var last = (friendsCurrentRow + friendsRowsLimit) * friendsCols;
	if (last > friends.length)
		last = friends.length;
	$('friendsMsg').innerHTML = 'Amici da ' + (friendsCurrentRow * friendsCols + 1) + ' a ' + last;
}

// Init
window.addEvent('domready', function() {
	showFriends();
});