This was a fun one, jsFiddle
$(document).scroll(function () {
var y = $(this).scrollTop();
var x = $("#myDiv").position();
if (y > (x.top - 50)) { // -50 so things don't overlap
$(".magic").addClass(
"bounceInRight");
}
else {
$(".magic").removeClass(
"bounceInRight");
}
});
Animation from Animate.CSS