;(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...

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

//  $.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: 100, // 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.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