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              Picture of some dogs :)

<img id="js-img" src="http://www.animalwellnessmg.com/blog/wp-content/uploads/2013/02/2-puppies.jpg" alt="">
            
          
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JS

            
              //http://4.bp.blogspot.com/_WXugEZPRsCI/TM7QfIF8DaI/AAAAAAAAADs/9uE6vWfXPKA/s1600/bunch-of-kitties.jpg

$('#js-img').hide().attr('src', 'http://4.bp.blogspot.com/_WXugEZPRsCI/TM7QfIF8DaI/AAAAAAAAADs/9uE6vWfXPKA/s1600/bunch-of-kitties.jpg').show();
            
          
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