Backround image not showing in firefox but works in IE

Hello,
In the ID "container" backround image is specified. Works in IE but does not show up in Fire Fox.

Any Idea's?
Htpp://www.iads.co.uk

Regards,

Keyvan
 
<--------------------------------CSS BELOW--------------------------------------->
body {background-color:#dfdfdf;}

#container
{
    width: 950px;
    background-image:url(images/pageleft.gif);
    background-repeat:repeat-y;
    background-position:-9px;
    }

#masthead{
    width:930px;
    height:100px;
    background-image:url(images/iads.jpg);
    background-repeat:no-repeat;
    margin-bottom:0px;
    padding-bottom:0px;
    }

#menu{
    background-image:url(images/maintopright.gif);
    background-repeat:no-repeat;
    background-position:top right;
    width:930px;
    height:15px;
    margin-top:0px;
    margin-right:10px;
    padding-bottom:0px;
    }

#leftpage{
    width:150px;
    float:left;

    margin:0px;
    padding-top:10px;
    }

#rightpage{
    width:779px;
    border-right: solid 1px black;
    float:left;
    background-color:White;
    }

#footer{
    font-family:Arial;
    font-size:x-small;
    text-align:center;
    background-image:url(images/bottom.gif);
    background-repeat:no-repeat;
    width:930px;
    height:20px;
    float:left;
    padding-left:90px;
    }

#leftcont{
    float:left;  
    padding:10px 20px 10px 10px;
    width:350px;
    font-family:Trebuchet MS;
    text-align:justify;
    font-size:small;
    border-right:dotted 1px gray;
    margin-left:15px;
    margin-top:15px;
    margin-right:5px;
    list-style-type:square;
    }

#rightcont{
    float:right;
    width:350px;
    font-family:Trebuchet MS;
    text-align:justify;
    font-size:small;
    margin-top:15px;
    margin-left:0px;
    margin-right:0px;
    padding-top:40px;
    padding-right:5px;
    }

#clearboth{
    width:100%;
    clear:both;
    }

 .menuitemselected
 {
    background-image:url('/images/menubluegloss.gif');
    font-family:Trebuchet MS;
    font-size:small;
 }
  .menuitemhover
 {
    background-image:url('/images/menubluegloss.gif');
    font-family:Trebuchet MS;
    font-size:small;
 }
 
.vas
{
    padding:0px 15px 0px 20px;
    margin: 0px 10px 0px 10px;
    font-family:Trebuchet MS;
    text-align:justify;
    font-size:small;

}

.vas h1
{
    margin-top:0px;
    font-family:Trebuchet MS;
    font-size:medium;
   
}

.bullets
{
    list-style-type:square;
    line-height:20px;
}