Iron.Route.prototype.dispatch = (url, context, done) ->
    Iron.utils.assert context._runRoute, "context doesn't have a _runRoute method"
    $('.content, .footer').removeClass('fadeIn')

    setTimeout =>
        context._runRoute(this, url, done)
    , 100 # Change to however long your 'fade out' transition takes

Router.onAfterAction ->
     $('.content, .footer').addClass('fadeIn')

# CSS
.content,
.footer
    transition opacity 0.1s ease
    opacity 0

.content.fadeIn,
.footer.fadeIn
    transition opacity 0.5s ease
    opacity 1