Touch Device Detection

touch-device-detection.js

var checkTouch = function(){

    /* Touch Device Detection */
    var isTouchDevice = 'ontouchstart' in document.documentElement;
    var isTouchDeviceFireFoxBug = navigator.userAgent.toLowerCase().indexOf('firefox') > -1;  /* Fixed FireFox Bug */
    var isTouch = isTouchDevice || isTouchDeviceFireFoxBug;

    if( isTouch ) {
        $('html').addClass('touch');
    } else {
        $('html').addClass('no-touch');
    }  
};
checkTouch();