$(document).ready(function() {
            function megaHoverOver() {
                $(this).find(".sub").stop().fadeTo('fast', 1).show();

                
                (function($) {
                    jQuery.fn.calcSubWidth = function() {
                        rowWidth = 0;
                       
                        $(this).find("ul").each(function() {
                            rowWidth += $(this).width();
                        });
                    };
                })(jQuery);

                if ($(this).find(".row").length > 0) { 
                    var biggestRow = 0;
                   
                    $(this).find(".row").each(function() {
                        $(this).calcSubWidth();
                      
                        if (rowWidth > biggestRow) {
                            biggestRow = rowWidth;
                        }
                    });
                   
                    $(this).find(".sub").css({ 'width': biggestRow });
                    $(this).find(".row:last").css({ 'margin': '0' });

                } else { 

                    $(this).calcSubWidth();
                   
                    $(this).find(".sub").css({ 'width': rowWidth });

                }
            }

            function megaHoverOut() {
                $(this).find(".sub").stop().fadeTo('fast', 0, function() {
                    $(this).hide();
                });
            }


            var config = {
                sensitivity: 1, // number = sensitivity threshold (must be 1 or higher)    
                interval: 100, // number = milliseconds for onMouseOver polling interval    
                over: megaHoverOver, // function = onMouseOver callback (REQUIRED)    
                timeout: 100, // number = milliseconds delay before onMouseOut    
                out: megaHoverOut // function = onMouseOut callback (REQUIRED)    
            };

           
            $("ul#topnav li").hoverIntent(config);
        });