#twocols{ /*the columns that gets dropped down over yours might be different*/
z-index:20;
}
#leftcol{  /*the columns that gets dropped down over yours might be different*/
z-index:10;
}
.moduletablemainnav{ /* I have absolutely positioned the module, you might have a different scheme*/
position:absolute;
top:187px;
left:20px;
z-index:100;
font:0.9em Verdana, Arial, Helvetica, sans-serif;
margin:0;
padding:0;
}
#mainlevelmainnav,#mainlevelmainnav ul{
float:left;
list-style:none;
line-height:1em;
background:transparent;
font-weight:700;
margin:0;
padding:0;
}
#mainlevelmainnav a{
display:block;
color:#FFF;
text-decoration:none;
margin-right:10px;
padding:0.9em;
}

#mainlevelmainnav li{
float:left;
padding:0;
list-style:none;
}

#mainlevelmainnav li ul{
list-style:none;
position:absolute;
left:-999em;
height:auto;
width:18em;
font-weight:400;
background:#F2F2F2;
margin:0;
}

#mainlevelmainnav li li{
width:18em;
list-style:none;
}

#mainlevelmainnav li ul a{
width:18em;
color:#666;
font-size:0.9em;
line-height:1em;
font-weight:400;
padding-left:25px;
list-style:none;
}

#mainlevelmainnav li:hover ul ul,#mainlevelmainnav li:hover ul ul ul,#mainlevelmainnav li.sfhover ul ul,#mainlevelmainnav li.sfhover ul ul ul{
left:-999em;
list-style:none;}
#mainlevelmainnav li:hover ul,#mainlevelmainnav li li:hover ul,#mainlevelmainnav li li li:hover ul,#mainlevelmainnav li.sfhover ul,#mainlevelmainnav li li.sfhover 
ul,#mainlevelmainnav li li li.sfhover ul{
left:auto;
z-index:6000;
}
#mainlevelmainnav li li:hover,#mainlevelmainnav li li.sfhover{
background:#ccc url(../images/soccerball.gif) 98% 50% no-repeat;
}