[jQuery] Superfish problem with IE7

[eugene33]

Hi,

I have a little problem with superfish and IE7 (probably IE6 too
couldn't test it) works perfectly with FF/Konqueror...
the link : http://september.bizpax.us
Here is the css I used :
/* There is a version of this file commented in great detail for
educational purposes here:
 * http://users.tpg.com.au/j_birch/plugins/superfish/superfish.commented.css
 */

/*** ESSENTIAL STYLES ***/
.nav, .nav * {
        margin:0;
        padding:0;
        list-style:none;
}
.nav {
        line-height:1.0;
}
.nav ul {
        position:absolute;
        top:-999em;
        width:9.45em;
}
.nav ul li,
.nav a {
        width: 100%;
}
.nav li {
        float:left;
        position:relative;
        z-index:99;
}
.nav a {
        display:block;
}
.nav li:hover ul,
ul.nav li.sfHover ul {
        left:-1px;
        top:2.5em;
}
.nav li:hover li ul,
.nav li.sfHover li ul {
        top:-999em;
}
.nav li li:hover ul,
ul.nav li li.sfHover ul {
        left:9.45em;
        top:-1px;
}
.superfish li:hover ul,
.superfish li li:hover ul {
        top: -999em;
}

/*** ORIGINAL SKIN ***/
.nav {
        float:left;
        margin-bottom:1.5em;
}
.nav li {
        background:#BDD2FF;
        border-left:1px solid #fff;
        border-top:1px solid #CFDEFF;
        width:9.45em;
}
.nav a {
        color: #13a;
        padding: .75em 0;
        text-decoration:none;
        text-indent: 2em;
}
.nav li:hover, .nav li.sfHover,
.nav a:focus, .nav a:hover, .nav a:active {
        background:#CFDEFF;
}
.nav li li {
        background:#AABDE6;
}
.nav li li li {
        background:#9AAEDB;
}

**************************************************************************************************
The JS code I used:
<script type="text/javascript">
$(document).ready(function(){
        $("ul.nav").superfish({
                hoverClass      : "sfHover",
                pathClass       : "current",
                delay           : 800,
                animation       : {opacity:"show"},
                speed           : "normal",
                oldJquery       : false, /* set to true if using jQuery version 
below 1.2
*/
                disableHI       : false, /* set to true to disable hoverIntent 
detection
*/
                onInit          : function(){},
                onBeforeShow    : function(){},
                onShow          : function(){},
                onHide          : function(){}
        });
});
</script>
*********************************************************************
And I put the bigframe.js too
I really don't see where the problem is !?!
I used :
Jquery 1.2.2
the IE7 Javascript from http://ie7-js.googlecode.com/svn/version/2.0(beta)/
and Superfish 1.4.1
Any help would be greatly appreciated