не работает меню IE8

[violettta]

Всем привет! Моё меню на ие8 не работает , помогите его исправить :

   #mbtnavbar {
background : #060505;
width : 920px;
color : #fff;
margin : 0 auto;
padding : 0;
border-top : 0 solid #960100;
height : 35px;
}
#mbtnav {
 margin-left:23px;
padding : 0;
}
#mbtnav ul {
float : left;
list-style : none;
margin : 0;
padding : 0;
}
#mbtnav li {
list-style : none;
margin : 0;
padding : 0;
border-left : 1px solid #333;
border-right : 1px solid #333;
height : 35px;
}
#mbtnav li a, #mbtnav li a:link, #mbtnav li a:visited {
color : #fff;
display : block;
font : normal 12px Gill Sans, sans-serif;
margin : 0;
padding : 9px 12px 10px 12px;
text-decoration : none;
}
#mbtnav li a:hover, #mbtnav li a:active {
background : #960100;
color : #fff;
display : block;
text-decoration : none;
margin : 0;
padding : 9px 12px 10px 12px;
}
#mbtnav li {
float : left;
padding : 0;
}
#mbtnav li ul {
z-index : 9999;
position : absolute;
left : -999em;
height : auto;
width : 160px;
margin : 0;
padding : 0;
}
#mbtnav li ul a {
width : 140px;
}
#mbtnav li ul ul {
margin : -25px 0 0 161px;
}
#mbtnav li:hover ul ul, #mbtnav li:hover ul ul ul, #mbtnav li.sfhover ul ul, #mbtnav li.sfhover ul ul ul {
left : -999em;
}
#mbtnav li:hover ul, #mbtnav li li:hover ul, #mbtnav li li li:hover ul, #mbtnav li.sfhover ul, #mbtnav li li.sfhover ul, #mbtnav li li li.sfhover ul {
left : auto;
}
#mbtnav li:hover, #mbtnav li.sfhover {
position : static;
}
#mbtnav li li a, #mbtnav li li a:link, #mbtnav li li a:visited {
background : #960100;
width : 140px;
color : #fff;
display : block;
font : normal 12px Gill Sans, sans-serif;
margin : 0;
padding : 9px 12px 10px 12px;
text-decoration : none;
z-index : 9999;
border-bottom : 1px dotted #333;
}
#mbtnav li li a:hover, #mbtnavli li a:active {
background : #060505;
color : #fff;
display : block;
margin : 0;
padding : 9px 12px 10px 12px;
text-decoration : none;
}

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