<script language="javascript">
random.m=714025; random.a=4096; random.c=150889;
random.seed = (new Date()).getTime()%random.m;
function random()
{
random.seed = (random.seed*random.a + random.c) % random.m;
return random.seed / random.m;
}

function randomizeimages()
{
randomizeimage('image1', 6, 'article/', '.png');
randomizeimage('image2', 6, 'adjective/', '.png');
randomizeimage('image3', 6, 'subject/', '.png');
randomizeimage('image4', 6, 'verb/', '.png');
randomizeimage('image5', 6, 'object/', '.png');
randomizeimage('image6', 6, 'adverb/', '.png');
}

function randomizeimage(img, count, base, type)
{
document.images[img].src = base + Math.floor(random() * count + 1) + type
}
</script>

<div style="margin: 0 auto; width: 500px; text-align: center; padding: 20px; background: #ccc">
<img name="image1" src="article/7.png">
<img name="image2" src="adjective/5.png">
<img name="image3" src="subject/6.png">
<img name="image4" src="verb/5.png">
<img name="image5" src="object/6.png">
<img name="image6" src="adverb/5.png"></div>