gistfile1.js

$.widget( "ui.autocomplete", $.ui.autocomplete, {
	_suggest: function( items ) {
		var menu = this.menu.element,
			width = menu.width(),
			height = menu.height();
		this._super( "_suggest", items );
		var newWidth = menu.width(),
			newHeight = menu.height();
		menu.css({
			width: width,
			height: height
		}).animate({
			width: newWidth,
			height: newHeight
		}, 300, function() {
			$( this ).css( "height", "" );
		});
	}
});