// Serialize JSON 
(function($){
    $.fn.serializeJSON=function(){
        var json={};
        jQuery.map($(this).serializeArray(),function(n,i){
            
            if(n['name'].indexOf('[]')){
                n['name'] = n['name'].split('[')[0];
            }
            
            if (json[n['name']]) {
                if (!json[n['name']].push) {
                    json[n['name']] = [json[n['name']]];
                }
                json[n['name']].push(n['value'] || '');
            } else {
                json[n['name']] = n['value'] || '';
            }
        });
        return json;
    };
})(jQuery);


/**
 * 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.
 *
 * @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
 */
$.fn.hoverIntent = function(f,g) {
    // default configuration options
    var cfg = {
        sensitivity: 7,
        interval: 80,
        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);
};