module pattern

gistfile1.js

var drawEvents = function() {

    var popupExists = function (target) {
        return !!jQuery(target).find("#sender").length;
    };

    var getLocationId = function(slots) {
        if (!slots) {
            return jQuery("#location_id").text();
        } else {
            return slots.attr("id").split("_")[1];
        }
    };

    return {
        thisContextIsPublic : function () {
           // I can use getLocationId() and popupExists() functions here
        }

    }
}();


// Now I can use this object like this:

drawEvents.thisContextIsPublic();

// but I can't do that:

drawEvents.popupExists(jQuery("Slot"));

// popupExists() is private method of drawEvents!