$(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: 100, // number = milliseconds for onMouseOver polling interval    
        over: megaHoverOver, // function = onMouseOver callback (REQUIRED)    
        timeout: 500, // number = milliseconds delay before onMouseOut    
        out: megaHoverOut // function = onMouseOut callback (REQUIRED)    
    };

    $("#topnav li .sub").css({ 'opacity': '0' });
    $("#topnav li").hoverIntent(config);



});