Background-image does not display!

Please help! I know by 99% that this is the right CSS but the background-image just won't show up!
Please help me find whats wrong...

HTML:
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CSS:
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#container {
width: 960px;
margin: auto;
text-align: left;
overflow: hidden;
}

html, body {

background-image:url(../images/bg.png);
background-repeat:repeat-x;

}

/* STANDARD
----------------------------------------------------------------------------------------------------*/

#secondary1 {
background: #dfdfdf;
height: 1900px;

}

#secondary1 p, a{
padding-left: 10px;
}

#secondary2 {
background: #FFFFFFF;
}

#secondary4, #secondary5, #secondary6, #secondary7, #secondary8, #secondary9 {
background: #FFFFFF;
}

#secondary4, #secondary5 {
height: 350px;
}

#secondary6, #secondary7, #secondary8, #secondary9 {
height: 285px;
}

#mainContent p {
padding: 0;
}

#mainContent {
background: #FFFFF;
}

#footer {

}

#header {
height: 147px;
background: #000000;
}

#main_content_menu {
height: 78px;
background: #ffffff;
}

#col1 {
background: #383838;
height: 40px;

}

#col1 p{
font-family:Arial, Helvetica, Verdana;
font-color: #ffffff;
font-size: 16px;
font-weight: bold;

}

#col2 {
background: #ffffff;
height: 40px;

}

p.ex
{
padding-left: 10px;

}

div.img
{
margin: 1px;
border: 0px solid #000;
height: auto;
width: auto;
float: left;
padding-left:4px;

}

div.img img
{
display: inline;
margin: 1px;
border: 1px solid #000;
}

div.img a:hover img {border: 1px solid #000;}
div.desc
{
text-align: center;
font-size: 9px;
font-weight: bold;
width: 80px;
margin: 2px;
}

prod_h1
{
font: Arial, Helvetica, sans-serif;
font-size:16px;
font-weight: bold;
padding-left: 10px;
}

h2
{
font: Arial, Helvetica, sans-serif;
font-size:12px;
font-weight: bold;
padding-left: 10px;
}

#left_menu
{

}

div.left_menu a.menu_link:link {
color:#000000; font-size: 10pt; font-weight: bold; text-decoration:none;
}

div.left_menu a.menu_link:visited {
color:#000000; font-size: 10pt; font-weight: bold; text-decoration:none;
}

div.left_menu a.menu_link:hover {
color:#999999; font-size: 10pt; font-weight: bold; text-decoration:none;
}

div.left_menu a.menu_link:active {
color:#000000; font-size: 10pt; font-weight: bold; text-decoration:none;

}

/*NAVIGERING*/

#main-nav { height: 45px; }
#main-nav dl { margin: 0; padding: 0; }

/* IE5 Mac Hack \*/
#main-nav { padding-left: 0px; }
/*/
#main-nav { padding-left: 11px; overflow: hidden; }
/* End Hack */

#main-nav dt { float: left; }

#main-nav dt a {
display: block;
height: 0px !important;
height /**/:6px; /* IE 5/Win hack */
padding: 45px 0 0 0;
overflow: hidden;
background-repeat: no-repeat;
}

#main-nav dt a:hover {
background-position: 0 -45px;
}

#main-nav dt a:active {
background-position: 0 -90px;
}

#main-nav dt#hem,
#main-nav dt#hem a { width: 78px; background-image: url(../images/menu_01.png); }

#main-nav dt#tillbehorsguide,
#main-nav dt#tillbehorsguide a { width: 161px; background-image: url(../images/menu_02.png); }

#main-nav dt#varumarken,
#main-nav dt#varumarken a { width: 173px; background-image: url(../images/menu_03.png); }

#main-nav dt#kundservice,
#main-nav dt#kundservice a { width: 132px; background-image: url(../images/menu_04.png); }

#main-nav dt#search,
#main-nav dt#search a { width: 58px; background-image: url(../images/menu_05.png); }

#main-nav dt#empty,
#main-nav dt#empty a { width: 358px; background-image: url(../images/menu_06.png); }

body.hem dt#hem,
body.hem dt#hem a,

body.tillbehorsguide dt#tillbehorsguide,
body.tillbehorsguide dt#tillbehorsguide a,

body.forelasningar dt#forelasningar,
body.forelasningar dt#forelasningar a,

body.varumarken dt#varumarken,
body.varumarken dt#varumarken a,

body.kundservice dt#kundservice,
body.kundservice dt#kundservice a,

body.search dt#search,
body.search dt#search a,

body.empty dt#empty,
body.empty dt#empty a,

{
background-position: 0 -90px;
}

#searchform
{
padding-left: 10px;
}