Image load not working with IE 8 or lower

I am aiming to check if image has been loaded successfully. It has been working well in modern browsers but IE8 or 7 it is a terrible issue. Here is a sample code:

var img = new Image(),
    url = 'http://something.com/images/something.gif';

    $(img).attr('src', url).load(function() {
        if (!this.complete || typeof this.naturalWidth == "undefined" || this.naturalWidth == 0) {
            alert('broken image!');
        } 
        else {
            alert('successfully loaded');
        }
    } 

Anyone has any idea to work around with this issue? Thanks in advace!