function SetCookie(name,value) {

　　//此 cookie 将被保存 30 天(可活动配置)

   var Days = 30;

   var exp  = new Date();

   exp.setTime(exp.getTime() + Days*24*60*60*1000);

   document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();

}

 //取cookies函数

 function getCookie(name) {

 　　var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));

    if(arr != null)

    　　return unescape(arr[2]);

    return null;

  }