function tab_change(id){
	for(var i = 0 ;i<8;i++){
		if(i == id){
			document.getElementById("a0"+i).style.backgroundPosition = "0px 0px";
			document.getElementById("tab_"+i).style.display = "block";
		}
		else{
			document.getElementById("a0"+i).style.backgroundPosition = "0px -23px";
			document.getElementById("tab_"+i).style.display = "none";
		}
	}
	
}

function rank_change(id){
	if(document.getElementById("detail"+id).style.display == "none")
		document.getElementById("detail"+id).style.display = "block";
	for(var i = 1 ;i<=10;i++){
		if(id!=i)
			document.getElementById("detail"+i).style.display = "none";
	}
}