//= require modernizr // github.com/Modernizr/Modernizr/issues/572 // Similar to jsfiddle.net/FWeinb/etnYC/ Modernizr.addTest('cssvhunit', function() {

var bool;
Modernizr.testStyles("#modernizr { height: 50vh; }", function(elem, rule) {   
    var height = parseInt(window.innerHeight/2,10),
        compStyle = parseInt((window.getComputedStyle ?
                  getComputedStyle(elem, null) :
                  elem.currentStyle)["height"],10);

    bool= (compStyle == height);
});
return bool;

});