<DIV class="alphaRed"></DIV>
<DIV class="alphaBlue"></DIV>

　CSS部分

.alphaRed
{
    background-color:red;
    width:7cm;
    height:6cm;
    filter:alpha(opacity=40);
    position:absolute;
    left:1cm;
    top:1cm
}

.alphaBlue
{
    background-color:blue;
    width:7cm;
    height:6cm;
    filter:alpha(opacity=40);
    position:absolute;
    left:3cm;
    top:3cm
}

トップページ