$(document).ready(function(){ 
        $("#header ul.sf-menu").supersubs({ 
            minWidth:    6,   // minimum width of sub-menus in em units 
            maxWidth:    27,   // maximum width of sub-menus in em units 
            extraWidth:  1     // extra width can ensure lines don't sometimes turn over 
        }).superfish();  // call supersubs first, then superfish
    });