js对Cookie读写

function ShowTop(){   
  var Mc = ['第一名','第二名','第三名','第四名','第五名','第六名','第七名','第八名','第九名','第十名'];   
  var cookie = ReadCookie("Top10");   
  var varr = cookie.split('|');   
  for (var i=0; i<varr.length; i++){   
    varr[i] = varr[i].split(',');   
  }   
  //topUser.replace(/\|/g,'\n')   
  var vstr = '';   
  for (var i=0; i < 10; i++){   
    vstr += Mc[i] + ' ： ' + varr[i][0] + '     金钱：' + varr[i][1] + '     健康：' + varr[i][2] + '     名声：' + varr[i][3] + '     \n\n';   
  }   
  alert(vstr);   
}   

//读取 cookies 信息   
function ReadCookie(name){   
  var cookieValue='';   
  var search=name+'=';   
  if(document.cookie.length>0){   
    offset=document.cookie.indexOf(search);   
    if (offset!=-1){   
      offset+=search.length;   
      end=document.cookie.indexOf(';', offset);   
      if (end == -1) end=document.cookie.length;   
      cookieValue = unescape(document.cookie.substring(offset,end))   
    }   
  }   
  return cookieValue;   
}   

//写入 cookies 信息   
function SetCookie(name,value,hours){   
  var expire = "";   
  hours=1;   
  path="/";   
  if(hours != null){   
    expire = new Date((new Date()).getTime() + hours * 3600000);   
    expire = "; expires=" + expire.toGMTString();   
  }   
  //alert(name + "=" + escape(value) + expire + ((path == null) ? "" : ("; path=" + path)));   
  document.cookie = name + "=" + escape(value) + expire + ((path == null) ? "" : ("; path=" + path));   
}