For more info and documentation go to: iliasiovis/hoverizr or Hoverizr on GitHub
The first 2 examples are responsive so you can shrink the browser width and they will keep the aspect ratio.
$('.ex2').hoverizr({speedOut: 'slow'});
$('.ex1').hoverizr({speedOut: 'slow',
effect:"blur",
overlay: "bottom",
container: "pipa",
width: "100px",
height: "100px",
stretch: "yes"});
$('#ex3').hoverizr({speedIn: 'slow',
effect:"invert"});