var isMoving = false;
var position = 0;

function goto(x)
{
	if ( (isMoving == false) && (x != position) )
	{
		isMoving = true;
		position = x;
		
		var container = document.getElementById('slider_container');
		var y = container.offsetTop;
		
		var t = new Tween(container.style,'top',Tween.strongEaseOut, y, x * -345, 1, 'px');
		t.onMotionFinished = function(){isMoving = false;};
		t.start();
	}
}