;(function($){ // secure $ jQuery alias
/*******************************************************************************************/   
// jquery.event.hover.js - rev 5 
// Copyright (c) 2008, Three Dub Media (http://threedubmedia.com)
// Liscensed under the MIT License (MIT-LICENSE.txt)
// http://www.opensource.org/licenses/mit-license.php
// Created: 2008-06-02 | Updated: 2008-07-30
/*******************************************************************************************/

// USE THESE PROPERTIES TO CUSTOMIZE SETTINGS...

// jQuery.event.special.hover.delay = 100; 
// Defines the delay (msec) while mouse is inside the element before checking the speed

// jQuery.event.special.hover.speed = 100; 
// Defines the maximum speed (px/sec) the mouse may be moving to trigger the hover event

// save the old jquery "hover" method
$.fn._hover = $.fn.hover;

// jquery method 
$.fn.hover = function( fn1, fn2, fn3 ) {
   if ( fn3 ) this.bind('hoverstart', fn1 ); // 3 args
   if ( fn2 ) this.bind('hoverend', fn3 ? fn3 : fn2 ); // 2+ args
   return !fn1 ? this.trigger('hover') // 0 args 
      : this.bind('hover', fn3 ? fn2 : fn1 ); // 1+ args
   }; 

// special event configuration
var hover = $.event.special.hover = {
   delay: 1000, // milliseconds
   speed: 100, // pixels per second
   setup: function( data ){
      data = $.extend({ speed: hover.speed, delay: hover.delay, hovered:0 }, data||{} );
      $.event.add( this, "mouseenter mouseleave", hoverHandler, data );
      },
   teardown: function(){
      $.event.remove( this, "mouseenter mouseleave", hoverHandler );
      }
   };

// shared event handler
function hoverHandler( event ){
   var data = event.data || event;
   switch ( event.type ){
      case 'mouseenter': // mouseover
         data.dist2 = 0; // init mouse distance²
         data.event = event; // store the event
         event.type = "hoverstart"; // hijack event
         if ( $.event.handle.call( this, event )!==false ){ // handle "hoverstart"
            data.elem = this; // ref to the current element
            $.event.add( this, "mousemove", hoverHandler, data ); // track the mouse
            data.timer = setTimeout( compare, data.delay ); // start async compare
            }
         break;
      case 'mousemove': // track the event, mouse distance² = x² + y²
         data.dist2 += Math.pow( event.pageX-data.event.pageX, 2 ) 
            + Math.pow( event.pageY-data.event.pageY, 2 ); 
         data.event = event; // store current event
         break;
      case 'mouseleave': // mouseout
         clearTimeout( data.timer ); // uncompare
         if ( data.hovered ){ 
            event.type = "hoverend"; // hijack event
            $.event.handle.call( this, event ); // handle "hoverend"
            data.hovered--; // reset flag
            }
         else $.event.remove( data.elem, "mousemove", hoverHandler ); // untrack
         break;
      default: // timeout compare // distance² = x² + y²  = ( speed * time )²
         if ( data.dist2  <= Math.pow( data.speed*( data.delay/1e3 ), 2 ) ){ // speed acceptable
            $.event.remove( data.elem, "mousemove", hoverHandler ); // untrack
            data.hovered++; // flag for "hoverend"
            data.event.type = "hover"; // hijack event
            if ( $.event.handle.call( data.elem, data.event ) === false ) // handle "hover"
               data.hovered--; // flag for "hoverend"
            }
         else data.timer = setTimeout( compare, data.delay ); // async recurse
         data.dist2 = 0; // reset distance² for next compare
         break;
      }
   function compare(){ hoverHandler( data ); }; // timeout/recursive function
   };
   
/*******************************************************************************************/
})(jQuery); // confine scope