var socials = new Array();
function moveOut( id, dy ) {
	if(socials[id] != null)
		socials[id].cancel();
	socials[id] = new Effect.Move( id, { x:0, y:dy, mode: 'absolute' } );
}
function moveIn( id, dy ) {
	if(socials[id] != null)
		socials[id].cancel();
	socials[id] = new Effect.Move( id, { x:140, y:dy, mode: 'absolute' } );
}