/*!
* jQuery UI Effects Drop 1.10.1
* http://jqueryui.com
*
* Copyright 2013 jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*
* http://api.jqueryui.com/drop-effect/
*
* Depends:
* jquery.ui.effect.js
*/
(function( $, undefined ) {

$.effects.effect.drop = function( o, done ) {

var el = $( this ),
props = [ "position", "top", "bottom", "left", "right", "opacity", "height", "width" ],
mode = $.effects.setMode( el, o.mode || "hide" ),
show = mode === "show",
direction = o.direction || "left",
ref = ( direction === "up" || direction === "down" ) ? "top" : "left",
motion = ( direction === "up" || direction === "left" ) ? "pos" : "neg",
animation = {
opacity: show ? 1 : 0
},
distance;

// Adjust
$.effects.save( el, props );
el.show();
$.effects.createWrapper( el );

distance = o.distance || el[ ref === "top" ? "outerHeight": "outerWidth" ]( true ) / 2;

if ( show ) {
el
.css( "opacity", 0 )
.css( ref, motion === "pos" ? -distance : distance );
}

// Animation
animation[ ref ] = ( show ?
( motion === "pos" ? "+=" : "-=" ) :
( motion === "pos" ? "-=" : "+=" ) ) +
distance;

// Animate
el.animate( animation, {
queue: false,
duration: o.duration,
easing: o.easing,
complete: function() {
if ( mode === "hide" ) {
el.hide();
}
$.effects.restore( el, props );
$.effects.removeWrapper( el );
done();
}
});
};

})(jQuery);