http://www.thaicreate.com/community/css-progressbar.html

<style>
.graph {
position: relative; /* IE is dumb */
width: 200px;
border: 1px solid #B1D632;
padding: 2px;
}
.graph .bar {
display: block;
position: relative;
background: #B1D632;
text-align: center;
color: #333;
height: 2em;
line-height: 2em;
}
.graph .bar span { position: absolute; left: 1em; }
</style>
<div class="graph">
<strong id="progress" class="bar" style="width: 0%;"><span id="val">0</span></strong>
</div>
function setProgess()
{
var currentWidth = parseInt(document.getElementById("progress").style.width);
var newWidth = currentWidth+1;

if(newWidth <= 100)
{
document.getElementById("progress").style.width = newWidth+"%";
document.getElementById("val").innerHTML = newWidth+"%";
setTimeout("setProgess()",100);
}
}
setProgess();
</script>