var WufooHelper = function() {
	return {
		set_defaults : function(keys) {
		  var query = document.location.search.split("?").slice(1)[0];
      var result = "";
      if(query != null){
        var pairs = query.split("&"); // ["key1=12-3-2010", "key2=14-3-2010"]
        var params={};
        for (var i = pairs.length - 1; i >= 0; i--){
          var r = pairs[i].split("=")
          params[r[0]]=r[1];
        };

        var defaults = [];
        for (var i = keys.length - 1; i >= 0; i--){
          var field = keys[i][1];
          var date = params[keys[i][0]];
          if(date){
          var members = (keys[i][0] == "checkin" || keys[i][0] == "checkout") ? date.split("-") : [date];
          // console.log(members);
          for (var n = 0; n <= members.length; n++){
            if(n == 0){
              defaults.push(field+"="+members.pop());
            } else {
              defaults.push(field+"-"+n+"="+members[n-1]);
            }
          } 
         }
        };
        result = defaults.join("&");
      }

      return result;
		}
	};
}();