How can I controle the visibility level of a div and make it see through?

css, html, visibility

Solution

http://www.quirksmode.org/css/opacity.html

.opaque1 {  // for all other browsers
    opacity: .5;
}

.opaque2 {  // for IE5-7
    filter: alpha(opacity=50);
}

.opaque3 {  // for IE8
    -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";
}

Problem

Can I control the visibility of some div in my website and make to become see-through using CSS only? In flash it's done through controlling what is called Alfa so I'm wondering if such a thing exist in CSS! Edition 001 Can I control the opacity of the div's background only? So the text in the div wouldn't be effected?

Original source