$("img").hover(function(){
window.setTimeout(function() {
$(this).addClass("hovering"); // add class .hovering to the exact img being hovered
}, 500);
});
$("img").hover(function() {
var $this = $(this);
window.setTimeout(function() {
$this.addClass("hovering"); // add class .hovering to the exact img being hovered
}, 500);
});