help me!!!!!

[wxdqz]

would someone tell me how this works...pleeeeeeeease!!!!!

<style>
img
{
filter:alpha(opacity=30)
}
</style>

<script type="text/javascript">
function clean()
{
interval=setInterval("makeclean(myImage)",10)
}

function foggy()
{
clearInterval(interval)
myImage.filters.alpha.opacity=10
}

function makeclean()
{
if (myImage.filters.alpha.opacity<100)
{
myImage.filters.alpha.opacity+=5
}
else if (window.interval)
{
clearInterval(interval)
}
}

</script>