function GetCookie(cookieName) 
{
	var cookieString = document.cookie;
	var start = cookieString.indexOf(cookieName + '=');
	if (start == -1) // 找不到
		return "";
	start += cookieName.length + 1;
	var end = cookieString.indexOf(';', start);
	if (end == -1) return unescape(cookieString.substring(start));
	return unescape(cookieString.substring(start, end));
}

/*
*
*登陆回车支持
*
*/
function LoginEnterClick(event)
{
    if (event.keyCode == 13)
    {
        event.returnValue=false;
        event.cancel = true;
        $('login').submit();
    }
}

/*
*
*Cookie
*
*/
function getExpDate(days, hours, minutes)
{
	var expDate = new Date();
	if(typeof(days) == "number" && typeof(hours) == "number" && typeof(hours) == "number")
	{
		expDate.setDate(expDate.getDate() + parseInt(days));
		expDate.setHours(expDate.getHours() + parseInt(hours));
		expDate.setMinutes(expDate.getMinutes() + parseInt(minutes));
		return expDate.toGMTString();
	}
}

 
function getCookieVal(offset)
{
	var endstr = document.cookie.indexOf(";", offset);
	if(endstr == -1)
	{
		endstr = document.cookie.length;
	}
	return unescape(document.cookie.substring(offset, endstr));
}

  
function getCookie(name)
{
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;
	while(i < clen)
	{
		var j = i + alen;
		if (document.cookie.substring(i, j) == arg)
		{
			return getCookieVal(j);
		}
		i = document.cookie.indexOf(" ", i) + 1;
		if(i == 0) break;
	}
	return "";
}


function setCookie(name, value, expires, path, domain, secure)
{
	document.cookie = name + "=" + escape(value) +
		((expires) ? "; expires=" + expires : "") +
		((path) ? "; path=" + path : "") +
		((domain) ? "; domain=" + domain : "") +
		((secure) ? "; secure" : "");
}

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();
}


function deleteCookie(name,path,domain) 
{
	if(getCookie(name))
	{
	    document.cookie = name + "=" +
		((path) ? "; path=" + path : "") +
		((domain) ? "; domain=" + domain : "") +
		"; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}