function toogle(ano){
	
	div = document.getElementById("mes_"+ano);
	img = document.getElementById("img_toogle_"+ano);
	if(div.className=="fechada"){
		div.className="aberta";
		img.src='/images/minus.gif';
		
	}else{
		div.className="fechada";	
		img.src='/images/more.gif';
	}
	
}