<script type="text/javascript">
$(document).ready(function(){
// your selector
$('img').each(function(index){
var img = $(this);
// create new image object
var newImg = new Image();
// get the src attribute to get the image size
newImg.src = img.attr('src');
// for demo purposes, used to display height and width values
img.hover(function(){
$('#size').html("<b>Height:</b>" + newImg.height + "px, <b>Width:</b>" + newImg.width + "px");
});
});
});
</script>
// HTML MARKUP
<span id="size"> <b>Height:</b> 00px, <b>Width:</b> 00px </span>