function tag(a,b,id){
	var n = a*10;
	var num = n+b;
	var nid = n+id;
	for(i=n;i<num;i++){
		document.getElementById("box"+i).className="none";
		document.getElementById("itag"+i).className="outtag";
		if(i==nid){
			document.getElementById("box"+i).className="block";
			document.getElementById("itag"+i).className="overtag";
		}
	}
}
function tag2(a,b,id){
	var n = a*10;
	var num = n+b;
	var nid = n+id;
	for(i=n;i<num;i++){
		document.getElementById("box"+i).className="none";
		document.getElementById("itag"+i).className="outtag2";
		if(i==nid){
			document.getElementById("box"+i).className="block";
			document.getElementById("itag"+i).className="overtag2";
		}
	}
}
function tag3(a,b,id){
	var n = a*10;
	var num = n+b;
	var nid = n+id;
	for(i=n;i<num;i++){
		document.getElementById("box"+i).className="none";
		document.getElementById("itag"+i).className="outtag3";
		if(i==nid){
			document.getElementById("box"+i).className="block";
			document.getElementById("itag"+i).className="overtag3";
		}
	}
}
function dis(id,state){
	if(state == 0){
		document.getElementById(id).className = "none";
	}
	if(state == 1){
		document.getElementById(id).className = "block";
	}
}
function ocbtn(id){
	var obj = document.getElementById(id);
	if (obj.className == "none")	{
		obj.className = "block";
	}else{
		obj.className = "none";	
	}
}