CSS - opacity in IE and SELECT BOXES

[erikito]

Hey there!

I've got a little problem with some css I'm using. The opacity at 75% in IE works ok, but I have a problem with the select boxes. They don't seem to react on the following CSS code:

[PHP] display: inline;
position: absolute;
top: 0;
left: 0;
width: 100%;
background: black;
z-index: center;
/* uncomment this to hide opacity effect */
/*display: none;*/
filter: alpha(opacity=75); /* IE Opacity */
opacity: 0.75; /* Mozilla (CSS3) Opaticy */
-moz-opacity: 0.75;[/PHP]

Look at the attached image for a screenshot:

In firefox everything looks ok.

I hope you guys can help! Thanks in advance!
Eric