Twitter Bootstrap Photo Gallery

ssgallery_function.php
function image_from_database() {
    $result = mysql_query("SELECT * FROM screenshots ORDER BY date_sub DESC");
    $count = 0;
    while($count < 4 && $row = mysql_fetch_array($result))
    {
        $count++;
        echo '<div class="span3">';
        echo '<img src="'.$row['thumbnail_link'].'" />';
        echo '</div>';
        echo ' ';
    }
}
ssgallery.php
<div class="container">
    <h1 class="text-center">The American Pacific Group ScreenShot Gallery</h1>
    <hr>
    <div class="row-fluid">
        <?php
            echo image_from_database();
        ?>
    </div>
</div>