(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);