Гелена,
<!DOCTYPE html >
<html>
<head>
<title></title>
<meta charset="utf-8" />
</head>
<body><div id='test'></div>
<script type="text/javascript">
function show()
{
var klient = new Array("Andrew","Thomas","Robert","Jack"),
imf = new Array("dance3","victory","thank_you2"),
tovar = new Array("corn","banana","cherry"),
nk = klient.length-1,
i = Math.round(nk*Math.random()),
nt = tovar.length-1,
j = Math.round(nt*Math.random()),
ni = imf.length-1,
k = Math.round(ni*Math.random()),
str = klient[i] +" купил " + tovar[j] + " <img src='http://javascript.ru/forum/images/smilies/"+imf[k]+".gif'>";
document.getElementById('test').innerHTML=str
setTimeout(show, 2000)
}
show()
</script>
</body>
</html>