var uid = get_cookie("uid");
var uname = get_cookie("uname");
if(uid == "" || uname =="")
{
	document.getElementById("spLoginKuan").style.display="";	
}
else
{
	document.getElementById("spUserKuan").style.display="";
	var content = "欢迎书友：<a href=\"http://www.duzhe123.com/panel.aspx\">"+uname+"</a>，您可以进入：<a href=\"http://www.duzhe123.com/panel.aspx\">用户面板</a> | <a href=\"http://www.duzhe123.com/bookcase.aspx\">我的书架</a> | <a href=\"http://www.duzhe123.com/logout.aspx\">退出登录</a>";
	document.getElementById("spUserKuan").innerHTML = content;
}

var HomePage = "";
var HomePage1 = "index.aspx";
var MenuInfo = "info.htm";
var Bang = "top.aspx";
var BookSort1 = "booksort1/";
var BookSort2 = "booksort2/";
var BookSort3 = "booksort3/";
var BookSort4 = "booksort4/";
var BookSort5 = "booksort5/";
var BookSort6 = "booksort6/";
var BookSort7 = "booksort7/";
var BookSort8 = "booksort8/";
var BookSort9 = "booksort9/";


function GetPageName(blparm){
    blparm = blparm || false;
    var Url = window.location.toString().split('#')[0];
    if (!blparm&&(Url.indexOf('?')!=-1)) Url = Url.split('?')[0];
    var aryUrl = Url.split("/");
    aryUrl[0] = aryUrl[1] = aryUrl[2] = "";
    var pageName = aryUrl.join("/").toLowerCase();
    return pageName.substr(3);
}

function GetActiveMenu()
{
    var CurrentPageName = GetPageName(false);
	if(CurrentPageName == HomePage || CurrentPageName == HomePage1 || CurrentPageName == MenuInfo)
	{
		document.getElementById("menuLiHome").className = "focus";
	}
	else if(CurrentPageName == Bang)
	{
		document.getElementById("menuLiBang").className = "focus";
	}
	else if(CurrentPageName.indexOf(BookSort1) == 0)
	{
		document.getElementById("menuLiSort1").className = "focus";
	}
	else if(CurrentPageName.indexOf(BookSort2) == 0)
	{
		document.getElementById("menuLiSort2").className = "focus";
	}
	else if(CurrentPageName.indexOf(BookSort3) == 0)
	{
		document.getElementById("menuLiSort3").className = "focus";
	}
	else if(CurrentPageName.indexOf(BookSort4) == 0)
	{
		document.getElementById("menuLiSort4").className = "focus";
	}
	else if(CurrentPageName.indexOf(BookSort5) == 0)
	{
		document.getElementById("menuLiSort5").className = "focus";
	}
	else if(CurrentPageName.indexOf(BookSort6) == 0)
	{
		document.getElementById("menuLiSort6").className = "focus";
	}
	else if(CurrentPageName.indexOf(BookSort7) == 0)
	{
		document.getElementById("menuLiSort7").className = "focus";
	}
	else if(CurrentPageName.indexOf(BookSort8) == 0)
	{
		document.getElementById("menuLiSort8").className = "focus";
	}
	else if(CurrentPageName.indexOf(BookSort9) == 0)
	{
		document.getElementById("menuLiSort9").className = "focus";
	}
	
    switch(CurrentPageName)
    {
        case HomePage.toLowerCase():
        case HomePage1.toLowerCase():
		case MenuInfo.toLowerCase():
            document.getElementById("menuLiHome").className = "focus";
            break;
        case Bang.toLowerCase():
            document.getElementById("menuLiBang").className = "focus";
            break;
		case BookSort1.toLowerCase():
			document.getElementById("menuLiSort1").className = "focus";
			break;
		case BookSort2.toLowerCase():
			document.getElementById("menuLiSort2").className = "focus";
			break;
		case BookSort3.toLowerCase():
			document.getElementById("menuLiSort3").className = "focus";
			break;
		case BookSort4.toLowerCase():
			document.getElementById("menuLiSort4").className = "focus";
			break;
		case BookSort5.toLowerCase():
			document.getElementById("menuLiSort5").className = "focus";
			break;
		case BookSort6.toLowerCase():
			document.getElementById("menuLiSort6").className = "focus";
			break;
		case BookSort7.toLowerCase():
			document.getElementById("menuLiSort7").className = "focus";
			break;
		case BookSort8.toLowerCase():
			document.getElementById("menuLiSort8").className = "focus";
			break;
		case BookSort9.toLowerCase():
			document.getElementById("menuLiSort9").className = "focus";
			break;
		
    }
}
GetActiveMenu();
<!--cookie access begin-->
function SetCookie(name,value)
{
	var argv=SetCookie.arguments;
    var argc=SetCookie.arguments.length;
    var expires=(2<argc)?argv[2]:null;
    var path=(3<argc)?argv[3]:null;
    var domain=(4<argc)?argv[4]:null;
    var secure=(5<argc)?argv[5]:false;
    document.cookie=name+"="+escape(value)+((expires==null)?"":("; expires="+expires.toGMTString()))+((path==null)?"":("; path="+path))+((domain==null)?"":("; domain="+domain))+((secure==true)?"; secure":"");
}

function set_cookie(name,value,expireday)
{
	if(expireday==null)
    {
        SetCookie(name,value,null,"/");
        return;
    }
	var expdate=new Date();
	expdate.setTime(expdate.getTime()+(24*60*60*1000*expireday));
	SetCookie(name,value,expdate,"/");
}

function get_cookie(cookie_name){ 

	var cookie_pos = document.cookie.indexOf(cookie_name); 
	// 如果找到了索引，就代表cookie存在，反之，就说明不存在。 
	if (cookie_pos != -1)
	{ 
		// 把cookie_pos放在值的开始，只要给值加1即可。 
		cookie_pos += cookie_name.length + 1; 
		var cookie_end = document.cookie.indexOf(";", cookie_pos); 
		if (cookie_end == -1)
		{ 
			cookie_end = document.cookie.length; 
		} 
		return decodeURIComponent(document.cookie.substring(cookie_pos,cookie_end)); 
	} 
	return ""; 
}  
<!--cookie access end -->