<script type="text/javascript">
var points=0;
var timeRset = setTimeout("timeR()",1000);
function timeR()
{
points++;
timeRset=setTimeout("timeR()",1000);
document.getElementById("load").innerHTML +=".";
if(points==4){document.getElementById("load").innerHTML =""; points=0;}
}
</script>
<p >Загрузка<span id="load"></span></p>