(function($){

 /* hoverIntent by Brian Cherne */

 $.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) {

     // next three lines copied from jQuery.hover, ignore children onMouseOver/onMouseOut

     var p = (e.type == "mouseover" ? e.fromElement : e.toElement) || e.relatedTarget;

     while ( p && p != this ) { try { p = p.parentNode; } catch(e) { p = this; } }

     if ( p == this ) { return false; }

     // 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); }

     // else e.type == "onmouseover"

     if (e.type == "mouseover") {

       // 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 == "onmouseout"

     } 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.mouseover(handleHover).mouseout(handleHover);

 };

})(jQuery);