/**
* hoverIntent is similar to jQuery's built-in "hover" function except that
* instead of firing the onMouseOver event immediately, hoverIntent checks
* to see if the user's mouse has slowed down (beneath the sensitivity
* threshold) before firing the onMouseOver event.
* 
* hoverIntent r6 // 2011.02.26 // jQuery 1.5.1+
* <http://cherne.net/brian/resources/jquery.hoverIntent.html>
* 
* hoverIntent is currently available for use in all personal or commercial 
* projects under both MIT and GPL licenses. This means that you can choose 
* the license that best suits your project, and use it accordingly.
* 
* // basic usage (just like .hover) receives onMouseOver and onMouseOut functions
* $("ul li").hoverIntent( showNav , hideNav );
* 
* // advanced usage receives configuration object only
* $("ul li").hoverIntent({
*   sensitivity: 7, // number = sensitivity threshold (must be 1 or higher)
*   interval: 100,   // number = milliseconds of polling interval
*   over: showNav,  // function = onMouseOver callback (required)
*   timeout: 0,   // number = milliseconds delay before onMouseOut function call
*   out: hideNav    // function = onMouseOut callback (required)
* });
* 
* @param  f  onMouseOver function || An object with configuration options
* @param  g  onMouseOut function  || Nothing (use configuration options object)
* @author    Brian Cherne brian(at)cherne(dot)net
*/
(function($) {
    $.fn.hoverIntent = function(f,g) {
        // default configuration options
        var cfg = {
            sensitivity: 7,
            interval: 100,
            timeout: 0
        };
        // override configuration options with user supplied object
        cfg = $.extend(cfg, g ? { over: f, out: g } : f );

        // instantiate variables
        // cX, cY = current X and Y position of mouse, updated by mousemove event
        // pX, pY = previous X and Y position of mouse, set by mouseover and polling interval
        var cX, cY, pX, pY;

        // A private function for getting mouse position
        var track = function(ev) {
            cX = ev.pageX;
            cY = ev.pageY;
        };

        // A private function for comparing current and previous mouse position
        var compare = function(ev,ob) {
            ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
            // compare mouse positions to see if they've crossed the threshold
            if ( ( Math.abs(pX-cX) + Math.abs(pY-cY) ) < cfg.sensitivity ) {
                $(ob).unbind("mousemove",track);
                // set hoverIntent state to true (so mouseOut can be called)
                ob.hoverIntent_s = 1;
                return cfg.over.apply(ob,[ev]);
            } else {
                // set previous coordinates for next time
                pX = cX; pY = cY;
                // use self-calling timeout, guarantees intervals are spaced out properly (avoids JavaScript timer bugs)
                ob.hoverIntent_t = setTimeout( function(){compare(ev, ob);} , cfg.interval );
            }
        };

        // A private function for delaying the mouseOut function
        var delay = function(ev,ob) {
            ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
            ob.hoverIntent_s = 0;
            return cfg.out.apply(ob,[ev]);
        };

        // A private function for handling mouse 'hovering'
        var handleHover = function(e) {
            // copy objects to be passed into t (required for event object to be passed in IE)
            var ev = jQuery.extend({},e);
            var ob = this;

            // cancel hoverIntent timer if it exists
            if (ob.hoverIntent_t) { ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); }

            // if e.type == "mouseenter"
            if (e.type == "mouseenter") {
                // set "previous" X and Y position based on initial entry point
                pX = ev.pageX; pY = ev.pageY;
                // update "current" X and Y position based on mousemove
                $(ob).bind("mousemove",track);
                // start polling interval (self-calling timeout) to compare mouse coordinates over time
                if (ob.hoverIntent_s != 1) { ob.hoverIntent_t = setTimeout( function(){compare(ev,ob);} , cfg.interval );}

            // else e.type == "mouseleave"
            } else {
                // unbind expensive mousemove event
                $(ob).unbind("mousemove",track);
                // if hoverIntent state is true, then call the mouseOut function after the specified delay
                if (ob.hoverIntent_s == 1) { ob.hoverIntent_t = setTimeout( function(){delay(ev,ob);} , cfg.timeout );}
            }
        };

        // bind the function to the two event listeners
        return this.bind('mouseenter',handleHover).bind('mouseleave',handleHover);
    };
})(jQuery);


// intent-docready.js

$(document).ready(function() {
    //On Hover Over
    function megaHoverOver(){
        $(this).find(".sub").stop().fadeTo('fast', 1).show(); //Find sub and fade it in
        (function($) {
            //Function to calculate total width of all ul's
            jQuery.fn.calcSubWidth = function() {
                rowWidth = 0;
                //Calculate row
                $(this).find("ul").each(function() { //for each ul...
                    rowWidth += $(this).width(); //Add each ul's width together
                });
            };
        })(jQuery); 

        if ( $(this).find(".row").length > 0 ) { //If row exists...

            var biggestRow = 0; 

            $(this).find(".row").each(function() {  //for each row...
                $(this).calcSubWidth(); //Call function to calculate width of all ul's
                //Find biggest row
                if(rowWidth > biggestRow) {
                    biggestRow = rowWidth;
                }
            });

            $(this).find(".sub").css({'width' :biggestRow}); //Set width
            $(this).find(".row:last").css({'margin':'0'});  //Kill last row's margin

        } else { //If row does not exist...

            $(this).calcSubWidth();  //Call function to calculate width of all ul's
            $(this).find(".sub").css({'width' : rowWidth}); //Set Width

        }
    }
    //On Hover Out
    function megaHoverOut(){
      $(this).find(".sub").stop().fadeTo('fast', 0, function() { //Fade to 0 opactiy
          $(this).hide();  //after fading, hide it
      });
    }
    //Set custom configurations
    var config = {
         sensitivity: 3, // number = sensitivity threshold (must be 1 or higher)
         interval: 80, // number = milliseconds for onMouseOver polling interval
         over: megaHoverOver, // function = onMouseOver callback (REQUIRED)
         timeout: 200, // number = milliseconds delay before onMouseOut
         out: megaHoverOut // function = onMouseOut callback (REQUIRED)
    };

    $("ul#topnav li .sub").css({'opacity':'0'}); //Fade sub nav to 0 opacity on default
    $("ul#topnav li").hoverIntent(config); //Trigger Hover intent with custom configurations
});