I try adding background image and header image in css/style
It's work in IE but with firefox no image appear. (Also no primary menu image in firefox)

here is my css for bg image

body {
color: #000;
font: 76% Verdana, Arial, Helvetica, sans-serif;
background:url('images/new_sky.jpg') fixed;
}

and for header

#header {
background:url('images/greenheader.png');
height:155px;
display:block;
}

Also I try adding opacity to wrapper area and fail, turn out all image are gone in IE and Fitrfox!

here is my css

#wrapper {
width:800px;
margin:auto;
background: #ffffff;
filter:alpha(opacity=80);
-moz-opacity:0.8;
-khtml-opacity: 0.8;
opacity: 0.8;
padding-top: 10px;

}

Thanks in advance.