$(document).ready(function(){ 
        $("ul.superfish").supersubs({ 
            minWidth:    15,   // minimum width of sub-menus in em units 
            maxWidth:    25,   // maximum width of sub-menus in em units 
            extraWidth:  1     // extra width can ensure lines don't sometimes turn over 
                               // due to slight rounding differences and font-family 
        }).superfish();  // call supersubs first, then superfish, so that subs are 
                         // not display:none when measuring. Call before initialising 
                         // containing tabs for same reason. 
});