Get Attribute for image

getting attr without ID

HTML

<img src="http://4.bp.blogspot.com/-uyvTMZ3dFPs/UKHsc_ZbysI/AAAAAAAACvo/QdVAlVBbUxE/s320/1hello.jpg"  onclick='imageInfo(this);'/>

JavaScript

function imageInfo (e)
{
    alert('image');
	alert(e.src);
}