function isInt (val) {
        var re = /^[-+]?[0-9]+$/;
        return re.test(val);
    }
*********************************************
 Library: Web 2.0 UI for jQuery
 - Following objects are defines
       - w2ui             - object that will contain all widgets
       - w2obj            - object with widget prototypes
       - w2utils          - basic utilities
       - $().w2render     - common render
       - $().w2destroy    - common destroy
       - $().w2marker     - marker plugin
       - $().w2tag        - tag plugin
       - $().w2overlay    - overlay plugin
       - $().w2menu       - menu plugin
       - w2utils.event    - generic event object
       - w2utils.keyboard - object for keyboard navigation
 - Dependencies: jQuery

== NICE TO HAVE ==
  - date has problems in FF new Date('yyyy-mm-dd') breaks
  - bug: w2utils.formatDate('2011-31-01', 'yyyy-dd-mm'); - wrong foratter
  - overlay should be displayed where more space (on top or on bottom)
  - write and article how to replace certain framework functions
  - format date and time is buggy
  - onComplete should pass widget as context (this)
  - add maxHeight for the w2menu
  - user localization from another lib (make it generic), https://github.com/jquery/globalize#readme
  - hidden and disabled in menus
  - isTime should support seconds
  - TEST On IOS

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