// JavaScript Document
function showMenu(tab,content,n,sum) {
	for (var i=1;i<=sum;i++) {
		if (i==n) {
				document.getElementById(tab+"_"+i).className="active";
				document.getElementById(content+"_"+i).style.display="block";
		}else {
			document.getElementById(tab+"_"+i).className="";
			document.getElementById(content+"_"+i).style.display="none";
		}
	}
}

//正文大中小
function doZoom(size){
	document.getElementById('zoom').style.fontSize=size+'px'
}

function showfMenu() {
	document.getElementById("show").className="active";
	document.getElementById("ClassList").style.display="";
}
function hiddenfMenu() {
	document.getElementById("show").className="";
	document.getElementById("ClassList").style.display="none";
}