;(function(window, undefined){	var CookieUtil = window.CookieUtil = window.CookieUtil || {};	var doc = window.document;	// 读取名称为name的Cookie信息	CookieUtil.read = function(name){		// 暂无Cookie		if(doc.cookie.length <= 0){			return null;		}		// 获取所有cookie信息		var cookies = doc.cookie.split(';');		var size = cookies.length, i, c;		// 遍历查找要读取的cookie信息		for(i = 0; i < size; i++){			c = cookies[i].split('=');			// 找到cookie，需要trim，写入的cookie自动添加了空格			if($.trim(c[0]) == name){				return unescape(c[1]);			}		}		return null;	};	// 写入名称为name，值为value的Cookie信息，过期时间为timeout秒	CookieUtil.write = function(name, value, timeout){		var flg = timeout === undefined;		var exp = flg ? 0 : timeout;		// 获取过期时间		var expires = new Date();		expires.setSeconds(expires.getSeconds() + exp);		// 写入Cookie信息		doc.cookie = name + '=' + escape(value) + (flg ? '' : (';expires=' + expires.toGMTString()));	};	// 删除名称为name的Cookie信息	CookieUtil.remove = function(name){		CookieUtil.write(name, null, -1);	};})(window);