jQuery悬停越界

我在这个网站上运行了一个非常简单的JavaScript图像悬停脚本，但悬停与图像不一致，我一辈子都想不出原因。

http://www.checkmyathletics.com/home/sample-page/

我的错误会突然出现在任何人身上吗？

，我可以发布任何需要的东西

感谢

;( function( $, window, undefined ) {
'use strict';
$.HoverDir = function( options, element ) {
    this.$el = $( element );
    this._init( options );
};
// the options
$.HoverDir.defaults = {
    speed : 300,
    easing : 'ease',
    hoverDelay : 0,
    inverse : false
};
$.HoverDir.prototype = {
    _init : function( options ) {
        // options
        this.options = $.extend( true, {}, $.HoverDir.defaults, options );
        // transition properties
        this.transitionProp = 'all ' + this.options.speed + 'ms ' + this.options.easing;
        // support for CSS transitions
        this.support = Modernizr.csstransitions;
        // load the events
        this._loadEvents();
    },
    _loadEvents : function() {
        var self = this;
        this.$el.on( 'mouseenter.hoverdir, mouseleave.hoverdir', function( event ) {
            var $el = $( this ),
                $hoverElem = $el.find( 'div' ),
                direction = self._getDir( $el, { x : event.pageX, y : event.pageY } ),
                styleCSS = self._getStyle( direction );
            if( event.type === 'mouseenter' ) {
                $hoverElem.hide().css( styleCSS.from );
                clearTimeout( self.tmhover );
                self.tmhover = setTimeout( function() {
                    $hoverElem.show( 0, function() {
                        var $el = $( this );
                        if( self.support ) {
                            $el.css( 'transition', self.transitionProp );
                        }
                        self._applyAnimation( $el, styleCSS.to, self.options.speed );
                    } );

                }, self.options.hoverDelay );
            }
            else {
                if( self.support ) {
                    $hoverElem.css( 'transition', self.transitionProp );
                }
                clearTimeout( self.tmhover );
                self._applyAnimation( $hoverElem, styleCSS.from, self.options.speed );
            }
        } );
    },
    // credits : http://stackoverflow.com/a/3647634
    _getDir : function( $el, coordinates ) {
        // the width and height of the current div
        var w = $el.width(),
            h = $el.height(),
            // calculate the x and y to get an angle to the center of the div from that x and y.
            // gets the x value relative to the center of the DIV and "normalize" it
            x = ( coordinates.x - $el.offset().left - ( w/2 )) * ( w > h ? ( h/w ) : 1 ),
            y = ( coordinates.y - $el.offset().top  - ( h/2 )) * ( h > w ? ( w/h ) : 1 ),
            // the angle and the direction from where the mouse came in/went out clockwise (TRBL=0123);
            // first calculate the angle of the point,
            // add 180 deg to get rid of the negative values
            // divide by 90 to get the quadrant
            // add 3 and do a modulo by 4  to shift the quadrants to a proper clockwise TRBL (top/right/bottom/left) **/
            direction = Math.round( ( ( ( Math.atan2(y, x) * (180 / Math.PI) ) + 180 ) / 90 ) + 3 ) % 4;
        return direction;
    },
    _getStyle : function( direction ) {
        var fromStyle, toStyle,
            slideFromTop = { left : '0px', top : '-100%' },
            slideFromBottom = { left : '0px', top : '100%' },
            slideFromLeft = { left : '-100%', top : '0px' },
            slideFromRight = { left : '100%', top : '0px' },
            slideTop = { top : '0px' },
            slideLeft = { left : '0px' };
        switch( direction ) {
            case 0:
                // from top
                fromStyle = !this.options.inverse ? slideFromTop : slideFromBottom;
                toStyle = slideTop;
                break;
            case 1:
                // from right
                fromStyle = !this.options.inverse ? slideFromRight : slideFromLeft;
                toStyle = slideLeft;
                break;
            case 2:
                // from bottom
                fromStyle = !this.options.inverse ? slideFromBottom : slideFromTop;
                toStyle = slideTop;
                break;
            case 3:
                // from left
                fromStyle = !this.options.inverse ? slideFromLeft : slideFromRight;
                toStyle = slideLeft;
                break;
        };
        return { from : fromStyle, to : toStyle };
    },
    // apply a transition or fallback to jquery animate based on Modernizr.csstransitions support
    _applyAnimation : function( el, styleCSS, speed ) {
        $.fn.applyStyle = this.support ? $.fn.css : $.fn.animate;
        el.stop().applyStyle( styleCSS, $.extend( true, [], { duration : speed + 'ms' } ) );
    },
};
var logError = function( message ) {
    if ( window.console ) {
        window.console.error( message );
    }
};
$.fn.hoverdir = function( options ) {
    var instance = $.data( this, 'hoverdir' );
    if ( typeof options === 'string' ) {
        var args = Array.prototype.slice.call( arguments, 1 );
        this.each(function() {
            if ( !instance ) {
                logError( "cannot call methods on hoverdir prior to initialization; " +
                "attempted to call method '" + options + "'" );
                return;
            }
            if ( !$.isFunction( instance[options] ) || options.charAt(0) === "_" ) {
                logError( "no such method '" + options + "' for hoverdir instance" );
                return;
            }
            instance[ options ].apply( instance, args );
        });
    } 
    else {
        this.each(function() {
            if ( instance ) {
                instance._init();
            }
            else {
                instance = $.data( this, 'hoverdir', new $.HoverDir( options, this ) );
            }
        });
    }
    return instance;
};
} )( jQuery, window );

$(function() {
            $(' #da-thumbs > li ').each( function() { $(this).hoverdir({
                hoverDelay : 75
            }); } );
        });

我也使用Modernizer（我不熟悉它，但它不适合粘贴。）

非常感谢