touchstart handlers for backbone clicks

gistfile1.js

// In the events object of the view:
// 'touchstart nav a': 'onNavTouchStart',
// 'touchmove nav a': 'onNavTouchMove',
// 'touchend nav a': 'onNavTouchEnd',

onNavTouchStart: function (event) {
    var href = $(event.target).attr('href');
    this.navTouchHref = (href && href !== '#') ? href : null;
},

onNavTouchMove: function (event) {
    this.navTouchHref = null;
},

onNavTouchEnd: function (event) {
    if (!this.navTouchHref) {
        return;
    }
    var href = $(event.target).attr('href');
    if (href && href === this.navTouchHref) {
        event.preventDefault();
        location.hash = href;
        this.navTouchHref = null;
    }
},