/**

 * Interface Elements for jQuery

 * FX - shake

 * 

 * http://interface.eyecon.ro

 * 

 * Copyright (c) 2006 Stefan Petre

 * Dual licensed under the MIT (MIT-LICENSE.txt) 

 * and GPL (GPL-LICENSE.txt) licenses.

 *   

 *

 */

/**

 * @name Shake

 * @description makes the element to shake

 * @param Integer times how many tomes to shake the element

 * @param Function callback (optional) A function to be executed whenever the animation completes.

 * @type jQuery

 * @cat Plugins/Interface

 * @author Stefan Petre

 */

jQuery.fn.Shake = function (times, callback) {

	return this.queue('interfaceFX',function(){

		if (!jQuery.fxCheckTag(this)) {

			jQuery.dequeue(this, 'interfaceFX');

			return false;

		}

		var e = new jQuery.fx.Shake(this, times, callback);

		e.shake();

	});

};

jQuery.fx.Shake = function (e, times, callback)

{

	var z = this;

	z.el = jQuery(e);

	z.el.show();

	z.times = parseInt(times)||3;

	z.callback = callback;

	z.cnt = 1;

	z.oldStyle = {};

	z.oldStyle.position = z.el.css('position');

	z.oldStyle.top = parseInt(z.el.css('top'))||0;

	z.oldStyle.left = parseInt(z.el.css('left'))||0;

	if (z.oldStyle.position != 'relative' && z.oldStyle.position != 'absolute') {

		z.el.css('position', 'relative');

	}

	z.shake = function ()

	{

		z.cnt ++;

		z.e = new jQuery.fx(

			z.el.get(0), 

			{

				duration: 60,

				complete : function ()

				{

					z.e = new jQuery.fx(

						z.el.get(0), 

						 {

							 duration: 60,

							 complete : function ()

							 {

								z.e = new jQuery.fx(

									e,

									{

										duration: 60, 

										complete: function(){

											if (z.cnt <= z.times)

												z.shake();

											else {

												z.el.css('position', z.oldStyle.position).css('top', z.oldStyle.top + 'px').css('left', z.oldStyle.left + 'px');

												jQuery.dequeue(z.el.get(0), 'interfaceFX');

												if (z.callback && z.callback.constructor == Function) {

													z.callback.apply(z.el.get(0));

												}

											}

										}

									},

									'left'

								);

								z.e.custom (z.oldStyle.left-20, z.oldStyle.left);

							 }

						},

						'left'

					);

					z.e.custom (z.oldStyle.left+20, z.oldStyle.left-20);

				}

			},

			'left'

		);

		z.e.custom (z.oldStyle.left, z.oldStyle.left+20);

	};

};