//opacity(id, opacStart, opacEnd, millisec)
	
	areas		= new Array();
	areas[0]	= "_entretenimento";
	areas[1]	= "_esporte";
	areas[2]	= "_politica";
	areas[3]	= "_economia";
	areas[4]	= "_geral";
	
	areaAtual	= 0;
	
	function ativaTroca(){
		
		
		
		troca = setInterval(function(){
			
			areaAtual++;
			
			if(areaAtual > 4){ areaAtual = 0; }
						
			for(i=0 ; i<5 ; i++){
				o("destaque"+areas[i]).style.display = "none";
				o("destaque"+areas[i]).style.opacity = 0;
				o("menu"+areas[i]).style.backgroundImage = "url('imgs_home/bg_destaques.jpg')";
			}
			
			o("menu"+areas[areaAtual]).style.backgroundImage = "url('imgs_home/bg_destaquesOVER.jpg')";
			o("destaque"+areas[areaAtual]).style.display = "block";
			opacity("destaque"+areas[areaAtual], 0, 100, 500);
			
			
		},5000);
		
	}
	
	function desativaTroca(){
		
		clearInterval(troca);
		
	}
	
	function mostraArea(id){
		for(i=0 ; i<5 ; i++){
			o("destaque"+areas[i]).style.display = "none";
			o("destaque"+areas[i]).style.opacity = 0;
			o("menu"+areas[i]).style.backgroundImage = "url('imgs_home/bg_destaques.jpg')";
		}
		
		o("menu"+areas[id]).style.backgroundImage = "url('imgs_home/bg_destaquesOVER.jpg')";
		o("destaque"+areas[id]).style.display = "block";
		opacity("destaque"+areas[id], 0, 100, 500);
		
		areaAtual = id;
		
	}
	
	ativaTroca();