$(document).ready(function(){
	//alert(getCookie("topUserEmail"));
	
	$('#btnLogin').click(function(){
		
		if ($('#loginun').val()== '')
    	{
    		alert("please enter your email");
    		$('#loginun').focus();
    		return false;
   		}
		if ($('#loginpw').val() == '')
    	{
    		alert("please enter your password");
        	$('#loginpw').focus();
        	return false;
    	}
		$('#cmd').attr("value","login");
		//#('#form1').submit();
		return true;

	});
	
	$('#btnLogout').click(function(){
		$('#cmd').attr("value","logout");
		return true;
		
		//$("#login").css("display","block");
		//$("#logout").css("display","none");
	});
	
	if(getCookie("topUserEmail"))
	{
		$("#login").css("display","none");
		$("#logout").css("display","block");
		//alert(getCookie("topUserEmail"));
		$("#account").html(getCookie("topUserEmail"));
	}
	else
	{
		$("#login").css("display","block");
		$("#logout").css("display","none");
		//alert(getCookie("topUserEmail")+"2");
	}
});

function Check()
{
	if ($('#loginun').val()== '')
    {
    	alert("please enter your email");
    	$('#loginun').focus();
    	return false;
   	}
	if ($('#loginpw').val() == '')
    {
    	alert("please enter your password");
        $('#loginpw').focus();
        return false;
    }
	$('#cmd').attr("value","login");

	return true;
}



function setCookie(name,value)//两个参数，一个是cookie的名子，一个是值
{
    var Days = 30; //此 cookie 将被保存 30 天
    var exp  = new Date();    //new Date("December 31, 9998");
    exp.setTime(exp.getTime() + Days*24*60*60*1000);
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString() + ";path=" + "/";
}
function getCookie(name)//取cookies函数        
{
    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
     if(arr != null) return unescape(arr[2]); return null;

}
function delCookie(name)//删除cookie
{
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    var cval=getCookie(name);
    if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();
}