function MoveLeft()
{
    new Effect.MoveBy('BigBox', 0, 800 , 
                              {
                                  duration: 0.4,  
                                  transition: Effect.Transitions.sinoidal								  
                              });
}

function SlideLeft()
{
    new Effect.MoveBy('BigBox', 0, 2 , 
                              {
                                  duration: 0.0,  
                                  transition: Effect.Transitions.linear,
								  queue: 'end'
                              });
	if(isSlidingLeft == true)
	{
		window.setTimeout(SlideLeft, 20);
	}
}

var isSlidingLeft = false;
function StartSlideLeft() {
	isSlidingLeft = true;
	SlideLeft();
}

function StopSlideLeft() {
	isSlidingLeft = false;
}

function MoveRight()
{
    new Effect.MoveBy('BigBox', 0, -800 , 
                              {
                                  duration: 0.4,  
                                  transition: Effect.Transitions.sinoidal
                              });
}

function SlideRight()
{
    new Effect.MoveBy('BigBox', 0, -2 , 
                              {
                                  duration: 0.0,  
                                  transition: Effect.Transitions.linear,
								  queue: 'end'
                              });
	if(isSlidingRight == true)
	{
		window.setTimeout(SlideRight, 20);
	}
}

var isSlidingRight = false;
function StartSlideRight() {
	isSlidingRight = true;
	SlideRight();
}

function StopSlideRight() {
	isSlidingRight = false;
}