var config = {
	sensitivity : 20,
	/* number = sensitivity threshold (must be 1 or higher) */
	interval : 200,
	/* number = milliseconds for onMouseOver polling interval */
	over : showcontent,
	/* function = onMouseOver callback (REQUIRED) */
	timeout : 200,
	/* number = milliseconds delay before onMouseOut */
	out : hidecontent/* function = onMouseOut callback (REQUIRED) */
};

jQuery(document).ready(function () {
	jQuery("#topnavlink ul > li").hoverIntent(config);

	jQuery("#topnavlink ul li a").focus(function (e) {
		jQuery(this).parent().trigger("mouseover");
	});
	jQuery("#topnavlink ul li a").focusout(function (e) {
		jQuery(this).parent().trigger("mouseout");
	});
});


/*
* 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 r5 // 2007.03.27 // jQuery 1.1.2+
* <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
* $("ul li").hoverIntent({
* sensitivity: 7, // number = sensitivity threshold (must be 1 or higher)
* interval: 100, // number = milliseconds of polling interval
* over: showNav, // function = onMouseOver callback (required)
* timeout: 0, // number = milliseconds delay before onMouseOut function call
* out: hideNav // function = onMouseOut callback (required)
* });
*
* @param f onMouseOver function || An object with configuration options
* @param g onMouseOut function || Nothing (use configuration options object)
* @author Brian Cherne <brian@cherne.net>
*/
(function($) {
$.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) {
var cmp = ( Math.abs(pX-cX) + Math.abs(pY-cY));
if(isNaN(cmp)) cmp=0;
ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
// compare mouse positions to see if they've crossed the threshold
if ( cmp < 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);