$('#div1').on('mouseover', function() {

$(this).velocity('callout.shake');

});

   $.Velocity.RegisterEffect('lixin.pulse', {

defaultDuration: 300,

calls: [

[{ scaleX: 1.1 }, 0.5],

[{ scaleX: 1.0 }, 0.5]

]

});

$('#div2').on('mouseover', function() {

$(this).velocity('lixin.pulse');

});