#curtain_1{
    height: 3000px;
    width: 300px;
    top: 0px;
    left: 0px;
    filter:alpha(opacity=90);
    -moz-opacity: 0.9;
    -khtml-opacity: 0.9;
    opacity: 0.9;
}

#curtain_2{
    height: 3000px;
    width: 100px;
    top: 0px;
    right: 200px;
    filter:alpha(opacity=90);
    -moz-opacity: 0.9;
    -khtml-opacity: 0.9;
    opacity: 0.9;
}