var loginHTML = [];
var userid 			= "";
var i_url 			= location.href;
var jd_url 			= i_url.substring(0, i_url.lastIndexOf('/')+1);
var index_str 		= "http://www.baidu.com";
var passport_str 	= "http://passport.baidu.com";
var login_str 		= passport_str + "/?login&tpl=ik&u=" + i_url;
var exit_str 		= passport_str + "/?logout&aid=7&u=" + jd_url;
var usrinfo_str 	= '<a href="' + passport_str + '/?center&tpl=ik&aid=7&default_tab=4" target="_blank"><strong>' + userid + "</strong></a>";
var myquz_str 		= "<a href=" + passport_str + "/?center&tpl=ik&aid=7&default_tab=4&default_page=2 target=_blank>我的提问</a>";
var myans_str 		= "<a href=" + passport_str + "/?center&tpl=ik&aid=7&default_tab=4&default_page=3 target=_blank>我的回答</a>";
var bdlo_str 		= "<a href=" + exit_str + ">退出</a>";

if (userid == "") {
	writeCommon();
} else {
	writeLogin();
}
document.getElementById('login').innerHTML = loginHTML.join('');

function writeIndex () {
	loginHTML.push('&nbsp;|&nbsp;<a id="BaiduLink" onclick="getTnCode()" href="http://www.baidu.com">百度首页</a>');
	loginHTML.push('&nbsp;|&nbsp;<a href="javascript:void(0)" onclick="setHome(this,window.location)">设为首页</a>');
}

function writeCommon () {
	loginHTML.push('<a href="#" onclick="passportLogin()">登录</a>');
	writeIndex();
}

function writeLogin () {
	try {
		loginHTML.push(usrinfo_str);
		writeIndex();
		loginHTML.push("&nbsp;|&nbsp;" + hi_str);
		loginHTML.push("&nbsp;|&nbsp;" + bdlo_str);
	} catch (e) {
	}
}

function passportLogin() {
	var url = encodeURIComponent(window.location);
	location.href = 'http://passport.baidu.com/?login&tpl=mn&u=' + url;
	return false;
}
function setHome(obj,vrl) {
	try {
		obj.style.behavior='url(#default#homepage)';obj.setHomePage(vrl);
	} catch(e){
		if(window.netscape) {
			try {
				netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
			} catch (e) {return false;}
			var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
			prefs.setCharPref('browser.startup.homepage',vrl);
		}
	}
	return false;
}

function getTnCode () {
	if (TN_CODE) {
		var link = document.getElementById('BaiduLink');
		link.href = "http://www.baidu.com/index.php?tn=" + TN_CODE;
	}
}