var Cookies = {
  set: function(name, value){
       var argv = arguments;
       var argc = arguments.length;
       var expires = (argc > 2) ? argv[2] : null;
       var path = (argc > 3) ? argv[3] : '/';
       var domain = (argc > 4) ? argv[4] : null;
       var secure = (argc > 5) ? argv[5] : false;
       document.cookie = name + "=" + escape (value) +
         ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
         ((path == null) ? "" : ("; path=" + path)) +
         ((domain == null) ? "" : ("; domain=" + domain)) +
         ((secure == true) ? "; secure" : "");
  },
  get: function(name){
   var arg = name + "=";
   var alen = arg.length;
   var clen = document.cookie.length;
   var i = 0;
   var j = 0;
   while(i < clen){
    j = i + alen;
    if (document.cookie.substring(i, j) == arg)
    	return Cookies.getCookieVal(j);
    i = document.cookie.indexOf(" ", i) + 1;
    if(i == 0)
    	break;
   }
   return null;
  },
  clear: function(name) {
    if(Cookies.get(name)){
      document.cookie = name + "=" +
      "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
  },
  
  getCookieVal: function(offset){
     var endstr = document.cookie.indexOf(";", offset);
     if(endstr == -1){
     	endstr = document.cookie.length;
     }
     return unescape(document.cookie.substring(offset, endstr));
  }  
};