delegate: function(rules) {
      return function(e) {
        var target = $(e.target);
        // first check the target itself
        for(var selector in rules){
          if (target.is(selector))
            return rules[selector].apply(this, $.makeArray(arguments));
        }
        // then, jump up to parents
        for(var selector in rules){
          if ((target = target.parents(selector)) && target.length > 0)
           return rules[selector].apply(this, [target].concat($.makeArray(arguments)));
        }
     }
}