$(document).ready(function() {
                    
                
                    function megaHoverOver(){
                        $(this).find(".sub").stop().fadeTo('fast', 1).show();
                            
                        //Calculate width of all ul's
                        (function($) { 
                            jQuery.fn.calcSubWidth = function() {
                                rowWidth = 0;
                                //Calculate row
                                $(this).find("ul").each(function() {					
                                    rowWidth += $(this).width(); 
                                });	
                            };
                        })(jQuery); 
                        
                        if ( $(this).find(".row").length > 0 ) { //If row exists...
                            var biggestRow = 0;	
                            //Calculate each row
                            $(this).find(".row").each(function() {							   
                                $(this).calcSubWidth();
                                //Find biggest row
                                if(rowWidth > biggestRow) {
                                    biggestRow = rowWidth;
                                }
                            });
                            //Set width
                            $(this).find(".sub").css({'width' :biggestRow});
                            $(this).find(".row:last").css({'margin':'0'});
                            
                        } else { //If row does not exist...
                            
                            $(this).calcSubWidth();
                            //Set Width
                            $(this).find(".sub").css({'width' : rowWidth});
                            
                        }
                    }
                    
                    function megaHoverOut(){ 
                      $(this).find(".sub").stop().fadeTo('fast', 0, function() {
                          $(this).hide(); 
                      });
                    }
                
                
                    var config = {    
                         sensitivity: 2, // number = sensitivity threshold (must be 1 or higher)    
                         interval: 80, // number = milliseconds for onMouseOver polling interval    
                         over: megaHoverOver, // function = onMouseOver callback (REQUIRED)    
                         timeout: 80, // number = milliseconds delay before onMouseOut    
                         out: megaHoverOut // function = onMouseOut callback (REQUIRED)    
                    };
                
                    $("ul#topnav li .sub").css({'opacity':'0'});
                    $("ul#topnav li").hoverIntent(config);
                
                });