$.get_named_guid() generates a globally unique ID(GUID) based on a unique reference of handle. This GUID can then be called up at a later point by passing in the handle.

$.get_named_guid()

    $.get_named_guid = function(handle, get_new) {
        var _base,
            _name = "_" + handle;
        get_new = get_new || false;
        $.guid = $.guid || 0;
        $.named_guids = $.named_guids || [];

        _base = $.named_guids["_" + handle];

        if (_base[_name] === null) {
            _base[_name] = $.guid++;
        }
        if (!get_new) {
            return $.named_guids[_name];
        }
        $.named_guids[_name] = ++$.guid;
        return $.named_guids[_name];
    };