Get Attribute for image

getting attr without ID

HTML

<script src="http://4.bp.blogspot.com/-uyvTMZ3dFPs/UKHsc_ZbysI/AAAAAAAACvo/QdVAlVBbUxE/s320/1hello.jpg"></script>
<img src="http://4.bp.blogspot.com/-uyvTMZ3dFPs/UKHsc_ZbysI/AAAAAAAACvo/QdVAlVBbUxE/s320/1hello.jpg" width='400' height='400' alt='Sample_image'>

JavaScript

$(document).ready(function(){
    $('img').click(function(e){        
        alert($(this).attr('src'));
    });
});