function MoveLeft()
{
    new Effect.MoveBy('big_box', 0, 106 , 
                              {
                                  duration: 0.4,  
                                  transition: Effect.Transitions.sinoidal
                              });
	new	Element.setStyle('slide_box', {overflow:'hidden'} );
}

function MoveRight()
{
    new Effect.MoveBy('big_box', 0, -106 , 
                              {
                                  duration: 0.4,  
                                  transition: Effect.Transitions.sinoidal
                              });
	new	Element.setStyle('slide_box', {overflow:'hidden'} );


						
}