window.addEvent('domready', function(){
	//First Example
$$('.top_div').each(function(a){
                  a.addEvents({
                      'mouseenter': function(){
                        		this.set('tween', {duration: 'short', transition: Fx.Transitions.Sine.easeOut});
                  					this.tween('opacity', [0.4,0.8]);
                      },
                      'mouseleave': function(){
                  									this.tween('opacity', [0.8,0.4]);
                      }
                  });
});

	 $('prev').set('tween', {duration: 'short', transition: Fx.Transitions.Sine.easeOut});
	 $('next').set('tween', {duration: 'short', transition: Fx.Transitions.Sine.easeOut});
	 
	 								$('bottom').addEvents({
                      'mouseenter': function(){
                        		
														$('prev').tween('left', [0]);
														$('next').tween('right', [0]);
                      },
                      'mouseleave': function(){
                  						$('prev').tween('left', [-40]);			
															$('next').tween('right', [-40]);
                      }
                  });

});