gistfile1.js

var toggleWidget = function(selector){

  var state = { 
    on: false
  , onFunc: function(){}
  , offFunc: function(){}
  , $el: $(selector)
  }

  o.$el.mouseenter(function(){ 
    if ( state.on ) o.onFunc()
    else            o.offFunc()
  })

  return state
}