function doClick1(o){
	 o.className="title1a";
	 var j;
	 var id;
	 var b;
	 for(var i=1;i<=3;i++){
	   id ="bb"+i;
	   j = document.getElementById(id);
	   b = document.getElementById("b"+i);
	   if(id != o.id){
	   	 j.className="title1b";
	   	 b.style.visibility = "hidden";
	   }else{
			b.style.visibility = "visible";
	   }
	 }
}

function doClick2(o){
	 o.className="title3a";
	 var j;
	 var id;
	 var b;
	 for(var i=1;i<=6;i++){
	   id ="cc"+i;
	   j = document.getElementById(id);
	   b = document.getElementById("c"+i);
	   if(id != o.id){
	   	 j.className="title3b";
	   	 b.style.visibility = "hidden";
	   }else{
			b.style.visibility = "visible";
	   }
	 }
}