var movePosition = 0;
var moveMargin = movePosition * moveWidth;
function move_left() {
	if (movePosition < 0) {
		movePosition++;
		moveMargin = movePosition * moveWidth + 1;
		Tween.addTween($('images'), {_marginLeft: moveMargin, time: 1, transition: "circOut"});
	}
}
function move_right() {
	if (movePosition > -(movePositionTotal)) {
		movePosition--;
		moveMargin = movePosition * moveWidth;
		Tween.addTween($('images'), {_marginLeft: moveMargin, time: 1, transition: "circOut"});
	}
}
function movePropagando() {
	if (movePosition > -(movePositionTotal)) {
		move_right();
	} else {
		movePosition = -1;
		move_left();
	}
}