/*  */
(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);