var menus = new Array;

			  function preparecarousel(active){

	var k=active+3;
	var diff=k-8;
	while($('item-'+diff)!=null){
		$('item-'+diff).style.display='none';
		diff--;
	}
	
	while($('item-'+k)!=null){
		$('item-'+k).style.display='none';
		k++;
	}
	if (active == 5)
	{
	$('item-prev').style.display='none';
	}
	else $('item-prev').style.display='block';
	
	
	 menus['item-']=active+3;
	 

}



// Affiche le menu precedent selon l'identifiant et cache l'ancien
		   function prevcarousel(menu){
		   		if(menus[menu]==null) menus[menu]=1;
		   		
		   		id=menus[menu]-8;
		   		
		   		if($(menu+''+id)!=null){
		   			
		   			$(menu+''+(id)).style.display='block';
					$(menu+''+(id)).setStyle('opacity','0');
					var fx = new Fx.Styles($(menu+''+(id)), {duration:1000, wait:false});
					fx.start({'opacity': '1'});
					
					$(menu+''+(id+1)).style.display='block';
					$(menu+''+(id+1)).setStyle('opacity','0');
					var fx1 = new Fx.Styles($(menu+''+(id+1)), {duration:1000, wait:false});
					fx1.start({'opacity': '1'});
					
					$(menu+''+(id+2)).style.display='block';
					$(menu+''+(id+2)).setStyle('opacity','0');
					var fx2 = new Fx.Styles($(menu+''+(id+2)), {duration:1000, wait:false});
					fx2.start({'opacity': '1'});
					
					$(menu+''+(id+3)).style.display='block';
					$(menu+''+(id+3)).setStyle('opacity','0');
					var fx3 = new Fx.Styles($(menu+''+(id+3)), {duration:1000, wait:false});
					fx3.start({'opacity': '1'});
					
					$(menu+''+(id+4)).style.display='block';
					$(menu+''+(id+4)).setStyle('opacity','0');
					var fx3 = new Fx.Styles($(menu+''+(id+4)), {duration:1000, wait:false});
					fx3.start({'opacity': '1'});
					
					$(menu+''+(id+5)).style.display='block';
					$(menu+''+(id+5)).setStyle('opacity','0');
					var fx3 = new Fx.Styles($(menu+''+(id+5)), {duration:1000, wait:false});
					fx3.start({'opacity': '1'});
					
					$(menu+''+(id+6)).style.display='block';
					$(menu+''+(id+6)).setStyle('opacity','0');
					var fx3 = new Fx.Styles($(menu+''+(id+6)), {duration:1000, wait:false});
					fx3.start({'opacity': '1'});
					
					$(menu+''+(id+7)).style.display='none';
										
					$(menu+'next').style.display='block';
					
					menus[menu]-=1;
					/*if($(menu+''+(menus[menu]-1))==null) $(menu+'prev').style.display='none';
				}else {
					$(menu+'prev').style.display='none';
				}*/
				}
	if (menus['item-'] == 8)
	{
	$(menu+'prev').style.display='none';
	}
	else $(menu+'prev').style.display='block';
	
	
 }
		  // Affiche le menu suivant selon l'identifiant et cache l'ancien
		   function nextcarousel(menu){
		   		if(menus[menu]==null) menus[menu]=1;
		   		
		   		id=menus[menu];
		   		
		   		if($(menu+''+id)!=null){
		   			
					$(menu+''+(id)).style.display='block';
					$(menu+''+(id)).setStyle('opacity','0');
					var fx = new Fx.Styles($(menu+''+(id)), {duration:1000, wait:false});
					fx.start({'opacity': '1'});
					
					$(menu+''+(id-1)).style.display='block';
					$(menu+''+(id-1)).setStyle('opacity','0');
					var fx1 = new Fx.Styles($(menu+''+(id-1)), {duration:1000, wait:false});
					fx1.start({'opacity': '1'});
					
					$(menu+''+(id-2)).style.display='block';
					$(menu+''+(id-2)).setStyle('opacity','0');
					var fx2 = new Fx.Styles($(menu+''+(id-2)), {duration:1000, wait:false});
					fx2.start({'opacity': '1'});
					
					$(menu+''+(id-3)).style.display='block';
					$(menu+''+(id-3)).setStyle('opacity','0');
					var fx3 = new Fx.Styles($(menu+''+(id-3)), {duration:1000, wait:false});
					fx3.start({'opacity': '1'});
					
					$(menu+''+(id-4)).style.display='block';
					$(menu+''+(id-4)).setStyle('opacity','0');
					var fx3 = new Fx.Styles($(menu+''+(id-4)), {duration:1000, wait:false});
					fx3.start({'opacity': '1'});
					
					$(menu+''+(id-5)).style.display='block';
					$(menu+''+(id-5)).setStyle('opacity','0');
					var fx3 = new Fx.Styles($(menu+''+(id-5)), {duration:1000, wait:false});
					fx3.start({'opacity': '1'});
					
					$(menu+''+(id-6)).style.display='block';
					$(menu+''+(id-6)).setStyle('opacity','0');
					var fx3 = new Fx.Styles($(menu+''+(id-6)), {duration:1000, wait:false});
					fx3.start({'opacity': '1'});
					
					$(menu+''+(id-7)).style.display='none';
					
					$(menu+'prev').style.display='block';
					
					menus[menu]+=1;
					if($(menu+''+(menus[menu]+7))==null) $(menu+'next').style.display='none';
				}else {
					$(menu+'next').style.display='none';
				}
		  }