function checksearch()
{
    var stype = document.getElementById("searchType").value;
    if(stype == "2")
    {
        window.location = "/so/tag.aspx?tag="+document.getElementById("key").value;return false;
    }
    return true;
}
function gologin()
{
    var username = escape(document.getElementById("usernotlogin_un").value);var password =  escape(document.getElementById("usernotlogin_pd").value);var remember =  document.getElementById("usernotlogin_rm").value;
    login(username,password,remember,1);
}
function login(username,password,remember,ptype){if(username == "" || password == ""){alert("用户名和密码均不能为空！");return;}
    document.getElementById("usernotlogin_bt").disabled = true;   
    var datas = "un="+username;datas+="&pd=" + password;datas+="&rm=" + remember + "&pdt="+ptype;
	jQuery.ajax({url: '/ajax/login.aspx', data: datas, type: 'POST',beforeSend: function() {
		document.getElementById("usernotloginReister").innerHTML = "<img src=\"/images/loading.gif\">";
	},
	error: function(request) {
	    document.getElementById("usernotlogin_bt").disabled = false;
	    document.getElementById("usernotloginReister").innerHTML = "免费注册";
		alert("登录失败，请稍后再试！");
	},
	success: function(data) {
	    document.getElementById("usernotlogin_bt").disabled = false;
	    document.getElementById("usernotloginReister").innerHTML = "免费注册";
		if(data == "1"){initiallogin();}else if(data == "-1"){alert("用户不存在！");}else if(data =="-2"){alert("密码错误！");}else{alert("登录失败！");}
	}
	});
}
function login1(username,password,remember,ptype){
    if(username == "" || password == ""){return;}    
    var datas = "un="+username;datas+="&pd=" + password;datas+="&rm=" + remember + "&pdt="+ptype;
	jQuery.ajax({url: '/ajax/login1.aspx', data: datas, type: 'POST',beforeSend: function() {},error: function(request) {},success: function(data) {	initiallogin(false);}});
}

function get_cookie(cookie_name,bldecode){
	var cookie_pos = document.cookie.indexOf(cookie_name); 
	if (cookie_pos != -1)
	{
		cookie_pos += cookie_name.length + 1; 
		var cookie_end = document.cookie.indexOf("&", cookie_pos);
		var cookie_end1 =  document.cookie.indexOf(";", cookie_pos);
		
		if(cookie_end >0)
		{		
		    if(cookie_end > cookie_end1 && cookie_end1 >0)
		    {
		        cookie_end = cookie_end1;
		    }
		}
		else
		{
		    cookie_end = cookie_end1;
		}

	    if (cookie_end == -1)
	    { 
		    cookie_end = document.cookie.length; 
		}
		
		var rvalue = document.cookie.substring(cookie_pos,cookie_end);
		if(bldecode)
		{
		    rvalue = decodeURIComponent(rvalue);
		}
		return rvalue;
	} 
	return ""; 
}  
<!--cookie access end -->

function initiallogin(clogin)
{
    var userid =  get_cookie("userid",true);
    if(userid != null && userid != "")
    {
        var username = get_cookie("username",true);
        if(username == null || username == "")
        {
            var password =  get_cookie("password",false);
            if(password != null || password != ""){if(clogin){login1(userid,password,1,2);}}
        }
        else
        {
            document.getElementById("usernotlogin").style.display = "none";
            document.getElementById("userlogin").style.display = "";
            document.getElementById("userlogin").innerHTML = "欢迎 <a href=\""+bbsurl+"/usercp.aspx\" target=\"_blank\">"+username+"</a> / <a href=\""+bbsurl+"/usercp.aspx\" target=\"_blank\">个人中心</a> / <a href=\""+bbsurl+"/usercpinbox.aspx\" target=\"_blank\">我的消息</a> / <a href=\""+bbsurl+"/mytopics.aspx\" target=\"_blank\">我的论坛</a> / <a href=\"/extand/logout.aspx\">退出登录</a>";return;
        }
    }    
    document.getElementById("usernotlogin").style.display = "";
    document.getElementById("userlogin").style.display = "none";
    
}