(function (factory){ 
if (typeof define === "function" && define.amd) { 
define(["jquery", "../version", "../effect"] , factory); 
} 
 else { 
factory(jQuery); 
} 
} 
(function ($){ 
return $.effects.define("drop", "hide", function (options, done){ 
var distance, element = $(this), mode = options.mode, show = mode === "show", direction = options.direction || "left", ref = (direction === "up" || direction === "down")? "top": "left", motion = (direction === "up" || direction === "left")? "-=": "+=", oppositeMotion = (motion === "+=")? "-=": "+=", animation = { 
opacity: 0}
; 
$.effects.createPlaceholder(element); 
distance = options.distance || element[ref === "top"? "outerHeight": "outerWidth"](true ) / 2; 
animation[ref] = motion + distance; 
if (show) { 
element.css(animation); 
animation[ref] = oppositeMotion + distance; 
animation.opacity = 1; 
} 
element.animate(animation, { 
queue: false ,
duration: options.duration,
easing: options.easing,
complete: done}
); 
} 
); 
} 
));