<input type=button value=rotate onclick="rt()">
<div id=X STYLE="position:absolute;"><img src='http://dotnet.aspx.cc/Images/logoSite.gif'></div><script>
var i = 0
function rt()
{
X.style.filter='progid:DXImageTransform.Microsoft.BasicImage(rotation=' + (++i) + ')'
if(i>3) i=0
}
</script>