function getCookie(name){
      var strCookie=document.cookie;
      var arrCookie=strCookie.split("; ");
      //alert(arrCookie);
      for(var i=0;i<arrCookie.length;i++){
            var arr=arrCookie[i].split("=");
            if(arr[0]==name)return arr[1];
      }
      return null;
}

function setCookie(name,value)
{
    var Days = 30;
    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();
}

var hasLoginCookie = 0;

if( getCookie("nickname") != null ){
	hasLoginCookie = 1;
}

var nickname ="";
if(getCookie("nickname")) {
	nickname = getCookie("nickname");
	nickname = decodeURI(nickname);
}

function top_search() {
	var key = document.getElementById('btn_search').value;
	if (key=="") {
		alert("请输入要搜索的关键字！");
		return;
	}
	url = "http://www.classone.cn/search.php?key=" + encodeURIComponent(key);
	location.href = url;
}