Random image link php

I am trying to put a Random Image on the top of the post, If I do the following code it shows all three images and link which is aspected. see it in here PALEOALL.

How could I randomise it to show just it one of then at time randomly with the php while command is running?

            <?php while ( have_posts() ) : the_post(); ?>

                <?php
                     get_template_part( 'content', get_post_format() );
                ?>

                <a href="http://ift.tt/1KNqQVN" title="Your Guide to Paleo"><img src="http://ift.tt/1g3J8V3" width="468" height="60" alt="Your Guide to Paleo" style="border: 1px solid #cccccc;" /></a>

                <a href="http://ift.tt/1KNqQVN" title="Your Guide to Paleo"><img src="http://ift.tt/1KNqRZG" width="468" height="60" alt="Your Guide to Paleo" style="border: 1px solid #cccccc;" /></a>

                <a href="http://ift.tt/1KNqQVN" title="Your Guide to Paleo"><img src="http://ift.tt/1g3J6N1" width="468" height="60" alt="Your Guide to Paleo" style="border: 1px solid #cccccc;" /></a>

            <?php endwhile; ?>

I tried this but is not working with the while.

<?php
$images = array(
    array("src" => "img src="http://ift.tt/1g3J8V3", "url" => "http://ift.tt/1KNqQVN"),
    array("src" => "img src="http://ift.tt/1KNqRZG", "url" => "http://ift.tt/1KNqQVN"),  
    array("src" => "img src="http://ift.tt/1g3J6N1", "url" => "http://ift.tt/1KNqQVN"),
    array("src" => "img src="http://ift.tt/1KNqTRa", "url" => "http://ift.tt/1KNqQVN"),  
    array("src" => "img src="http://ift.tt/1g3J8V7", "url" => "http://ift.tt/1KNqQVN")
); 

shuffle($images);

echo '<div class="images">';

foreach ($images as $image) {

    echo '<a href="'.$image["url"].'"><img src="'.$image["src"].'" /></a>';

}

echo '</div>';

Thank You in Advance.