function Cookie() {
   this .SetValue = function(name,value,hours,path,domain,secure) {
    var str = new  String();
    var nextTime = new  Date();
    nextTime.setHours(nextTime.getHours() + hours);
    str = name + " = " + escape(value);
     if (hours)
      str += " ;expires= " + nextTime.toGMTString();
     if (path)
      str += " ;path= " + path;
     if (domain)
      str += " ;domain= " + domain;
     if (secure)
      str += " ;secure " ;
    document.cookie = str;
    }
   this .GetValue = function(name) {
    var rs = new  RegExp( " (^|) " + name + " =([^;]*)(;|$) " , " gi " ).exec(document.cookie),tmp;
     if (tmp = rs)
       return  unescape(tmp[ 2 ]);
     return   null ;
    }
  }