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<script type="text/javascript">
  document.addEventListener("DOMContentLoaded", function() {

    var img = document.querySelector('#element-1 img');
    var orig_src = img.src; 
    
  	img.addEventListener("mouseenter", function( event ) {
			img.src = img.srcset =  'https://storage.googleapis.com/instapage-user-media/a23b8844/50448095-0-gettyimages-91031417.jpg';
    });

  	img.addEventListener("mouseleave", function( event ) {          
		     img.src = img.srcset = orig_src;
    });
  
  });
  
</script>