var prefFriendsImg = null;
	var prefFriendsLink = null;
	var friendsImg = null;
	var friendsLink = null;
	function startRotation() {
		prefFriendsImg = document.getElementById("preferred_friends_img");
		prefFriendsLink = document.getElementById("preferred_friends_link");
		friendsImg = document.getElementById("friends_img");
		friendsLink = document.getElementById("friends_link");
		rotationPrefFriend();
		rotationFriend();
	}

	function rotationPrefFriend() {
		setPrefFriend();
		setTimeout("rotationPrefFriend()",5000);
	}

	function rotationFriend() {
		setFriend();
		setTimeout("rotationFriend()",2500);
	}

	function setPrefFriend() {
		prefFriendsCur++;
		if (prefFriendsCur >= prefFriends.length) {
			prefFriendsCur = 0;
		}
		var cur = prefFriends[prefFriendsCur];
		prefFriendsImg.src = cur[0];
		prefFriendsLink.href = cur[1];
	}

	function setFriend() {
		friendsCur++;
		if (friendsCur >= friends.length) {
			friendsCur = 0;
		}
		var cur = friends[friendsCur];
		friendsImg.src = cur[0];
		friendsLink.href = cur[1];
	}