<script language="JavaScript1.2">
function makevisible(cur,which){
if (which==0)
cur.filters.alpha.opacity=100
else
cur.filters.alpha.opacity=20
}
</script>
<img src="圖片網址" border="0" style="filter:alpha(opacity=20)" onMouseover="makevisible(this,0)" onMouseout="makevisible(this,1)" width="500" height="700">
width="500" height="700" <<<<圖片實際大少，要更改
