/*
 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
 *
 * Uses the built in easing capabilities added In jQuery 1.1
 * to offer multiple easing options
 *
 * TERMS OF USE - jQuery Easing
 * 
 * Open source under the BSD License. 
 * 
 * Copyright Â© 2008 George McGinley Smith
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of 
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list 
 * of conditions and the following disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * Neither the name of the author nor the names of contributors may be used to endorse 
 * or promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
*/

// t: current time, b: begInnIng value, c: change In value, d: duration
jQuery.easing['jswing'] = jQuery.easing['swing'];

jQuery.extend( jQuery.easing,
{
	def: 'easeOutQuad',
	swing: function (x, t, b, c, d) {
		//alert(jQuery.easing.default);
		return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
	},
	easeInQuad: function (x, t, b, c, d) {
		return c*(t/=d)*t + b;
	},
	easeOutQuad: function (x, t, b, c, d) {
		return -c *(t/=d)*(t-2) + b;
	},
	easeInOutQuad: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t + b;
		return -c/2 * ((--t)*(t-2) - 1) + b;
	},
	easeInCubic: function (x, t, b, c, d) {
		return c*(t/=d)*t*t + b;
	},
	easeOutCubic: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t + 1) + b;
	},
	easeInOutCubic: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t + b;
		return c/2*((t-=2)*t*t + 2) + b;
	},
	easeInQuart: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t + b;
	},
	easeOutQuart: function (x, t, b, c, d) {
		return -c * ((t=t/d-1)*t*t*t - 1) + b;
	},
	easeInOutQuart: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
		return -c/2 * ((t-=2)*t*t*t - 2) + b;
	},
	easeInQuint: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t*t + b;
	},
	easeOutQuint: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t*t*t + 1) + b;
	},
	easeInOutQuint: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
		return c/2*((t-=2)*t*t*t*t + 2) + b;
	},
	easeInSine: function (x, t, b, c, d) {
		return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
	},
	easeOutSine: function (x, t, b, c, d) {
		return c * Math.sin(t/d * (Math.PI/2)) + b;
	},
	easeInOutSine: function (x, t, b, c, d) {
		return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
	},
	easeInExpo: function (x, t, b, c, d) {
		return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
	},
	easeOutExpo: function (x, t, b, c, d) {
		return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
	},
	easeInOutExpo: function (x, t, b, c, d) {
		if (t==0) return b;
		if (t==d) return b+c;
		if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
		return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
	},
	easeInCirc: function (x, t, b, c, d) {
		return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
	},
	easeOutCirc: function (x, t, b, c, d) {
		return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
	},
	easeInOutCirc: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
		return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
	},
	easeInElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
	},
	easeOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
	},
	easeInOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
		return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
	},
	easeInBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*(t/=d)*t*((s+1)*t - s) + b;
	},
	easeOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
	},
	easeInOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158; 
		if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
		return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
	},
	easeInBounce: function (x, t, b, c, d) {
		return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
	},
	easeOutBounce: function (x, t, b, c, d) {
		if ((t/=d) < (1/2.75)) {
			return c*(7.5625*t*t) + b;
		} else if (t < (2/2.75)) {
			return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
		} else if (t < (2.5/2.75)) {
			return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
		} else {
			return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
		}
	},
	easeInOutBounce: function (x, t, b, c, d) {
		if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
		return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
	}
});

/*
 *
 * TERMS OF USE - EASING EQUATIONS
 * 
 * Open source under the BSD License. 
 * 
 * Copyright Â© 2001 Robert Penner
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of 
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list 
 * of conditions and the following disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * Neither the name of the author nor the names of contributors may be used to endorse 
 * or promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
 */
/**
 * jquery.LavaLamp enhances an unordered list of menu-items with a ballooning animated effect
 * similar to the Lava Lamps of the 1970s. Use the CSS provided with the demos at
 * http://nixboxdesigns.com/demos/jquery-lavalamp-demos.html or experiment with your own styles 
 *
 * Requires jQuery v1.3.2
 *
 * http://nixboxdesigns.com/demos/jquery-lavalamp.php
 *
 * Copyright (c) 2008, 2009 Jolyon Terwilliger, jolyon@nixbox.com
 * Source code Copyright (c) 2007, 2008
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * credits to Guillermo Rauch and Ganeshji Marwaha (gmarwaha.com) for previous editions
 *
 * Version: 1.0 - adapted for jQuery 1.2.x series
 * Version: 1.1 - added linum parameter
 * Version: 1.2 - modified to support vertical resizing of elements
 * Version: 1.3 - enhanced automatic <li> item hi-lighting - will attempt to
 *					lock onto li > a element with href closest to selected
 *					window.location
 *			 	- click always returns 'true' by default, for standard link follow through.
 *
 * Version: 1.3.1 - verified for use with jQuery 1.3 - should still work with 1.2.x series
 *				- changed linum parameter to startItem for clarity
 *				- improved slide-in accuracy for .back elements with borders
 *				- changed .current class to .selectedLava for clarity and improved
 *					support
 *				- appended 'Lava' to all internal class names to avoid conflicts
 *				- fixed bug applying selectedLava class to elements with matching
 *					location.hash
 *				- now supports jquery.compat plugin for cross-library support
 *				- performance improvements
 *				- added new options:
 *				autoReturn: true - if set to false, hover will not return to last selected
 *									item upon list mouseout.
 *				returnDelay: 0 - if set, will delay auto-return feature specified # of
 *									milliseconds.
 *				setOnClick: true - if set to false, hover will return to default element
 *									regardless of click event.
 *				homeLeft: 0, homeTop: 0 - if either set to non zero value, absolute
 *									positioned li element with class .homeLava is 
 *									prepended to list for homing feature.
 *				homeWidth: 0, homeHeight: 0 - if set, are used for creation of li.homeLava
 *									element.
 *				returnHome: false - if set along with homeLeft or homeTop, lavalamp hover
 *									will always return to li.home after click.
 *
 * Version: 1.3.2 - fixed: stray $ references inside the plugin to work with
 * 					jQuery.noConflict() properly - thanks Colin.
 *
 * Version: 1.3.3 - fixed: added closure with null passed argument for move() command in
 * 					returnDelay to fix errors some were seeing - thanks to Michel and 
 *					Richard for noticing this.
 *
 *					fixed: changed mouseover/out events to mouseenter/leave to fix jerky
 *					animation problem when using excessive margins instead of padding.  
 *					Thanks to Thomas for the solution and Chris for demonstrating the problem.
 *					this fix requires jQuery 1.3.2 to work.
 *
 *					enhanced: added 'noLava' class detection to prevent LavaLamp effect
 *					application to LI elements with this class. This feature allows you to
 *					create submenus - for details, see examples at
 *					http://nixboxdesigns.com/demos/jquery-lavalamp-demos.html
 *
 *					enhanced: modified to better automatically find default location for 
 *					relative links. Thanks to Harold for testing and finding this bug.
 *
 * Examples and usage:
 *
 * The HTML markup used to build the menu can be as simple as...
 *
 *       <ul class="lavaLamp">
 *           <li><a href="#">Phone Home</a></li>
 *           <li><a href="#">Make Contact</a></li>
 *           <li><a href="#">Board Ship</a></li>
 *           <li><a href="#">Fly to Venus</a></li>
 *       </ul>
 *
 * Once you have included the style sheet that comes with the plugin, you will have to include 
 * a reference to the jQuery library, easing plugin (optional) and the LavaLamp(this) plugin.
 *
 * Use the following snippet to initialize the menu using jQuery easing library::
 * Easing Library 1.3 available here:  http://plugins.jquery.com/project/Easing
 * 
 *   $(function() { $(".lavaLamp").lavaLamp({ fx: "easeOutBack", speed: 700}) });
 *
 * @param Object - You can specify all the options shown below as object variables:
 *
 * @option fx - default is "swing"
 * @example
 * $(".lavaLamp").lavaLamp({ fx: "easeOutElastic" });
 * @desc Creates a menu with "Elastic" easing effect. You need to include the easing plugin for this to work.
 *
 * @option speed - default is 500 ms
 * @example
 * $(".lavaLamp").lavaLamp({ speed: 500 });
 * @desc Creates a menu with an animation speed of 500 ms.
 *
 * @option click - no defaults
 * @example
 * $(".lavaLamp").lavaLamp({ click: function(event, menuItem) { return false; } });
 * @desc You can supply a callback to be executed when the menu item is clicked. 
 * The event object and the menu-item that was clicked will be passed in as arguments.
 * 
 * @option startItem - default is 'no'
 * @example
 * jQuery(".lavaLamp").lavaLamp({ startItem: 2 });
 * @desc startItem specifies the li element to default to, beginning with 0 for the first li element 
 * within the parent UL or OL used to initialize lavaLamp.  This can be used to set default
 * lavaLamp hilight on page reloads.
 */

(function(jQuery) {
jQuery.fn.lavaLamp = function(o) {
	o = jQuery.extend({ fx: 'swing',
					  	speed: 500, 
						click: function(){return true}, 
						startItem: 'no',
						autoReturn: true,
						returnDelay: 0,
						setOnClick: true,
						homeTop:0,
						homeLeft:0,
						homeWidth:0,
						homeHeight:0,
						returnHome:false
						}, 
					o || {});

	var $home;
	// create homeLava element if origin dimensions set
	if (o.homeTop || o.homeLeft) { 
		$home = jQuery('<li class="homeLava selectedLava"></li>').css({ left:o.homeLeft, top:o.homeTop, width:o.homeWidth, height:o.homeHeight, position:'absolute' });
		jQuery(this).prepend($home);
	}
		
	return this.each(function() {
		var path = location.pathname + location.search + location.hash;
		var $selected = new Object;
		var delayTimer;
		var $back;
		var ce; //current_element
		
		var $li = jQuery('li[class!=noLava]', this);
		// check for complete path match, if so flag element into $selected
		if ( o.startItem == 'no' )
			$selected = jQuery('li a[href$="' + path + '"]', this).parent('li');
			
		// if still no match, this may be a relative link match 
		if ($selected.length == 0 && o.startItem == 'no')
			$selected = jQuery('li a[href$="' +location.pathname.substring(location.pathname.lastIndexOf('/')+1)+ location.search+location.hash + '"]', this).parent('li');

		// no default selected element matches worked, 
		// or the user specified an index via startItem
		if ($selected.length == 0 || o.startItem != 'no') {
			// always default to first item, if no startItem specified.
			if (o.startItem == 'no') o.startItem = 0;
			$selected = jQuery($li[o.startItem]);
		}
		// set up raw element - this allows user override by class .selectedLava on load
		ce = jQuery('li.selectedLava', this)[0] || jQuery($selected).addClass('selectedLava')[0];

		// add mouseover event for every sub element
		$li.mouseenter(function() {
			if (jQuery(this).hasClass('homeLava')) {
				ce = jQuery(this)[0];
			}
			move(this);
		});

		$back = jQuery('<li class="backLava"><div class="leftLava"></div><div class="bottomLava"></div><div class="cornerLava"></div></li>').appendTo(this);
		
		// after we leave the container element, move back to default/last clicked element
		jQuery(this).mouseleave( function() {
			if (o.autoReturn) {
				if (o.returnHome && $home) {
					move($home[0]);
				}
				else if (o.returnDelay) {
					if(delayTimer) clearTimeout(delayTimer);
					delayTimer = setTimeout(function(){move(null);},o.returnDelay + o.speed);
				}
				else {
					move(null);
				}
			}
		});

		$li.click(function(e) {
			if (o.setOnClick) {
				jQuery(ce).removeClass('selectedLava');
				jQuery(this).addClass('selectedLava');
				ce = this;
			}
			return o.click.apply(this, [e, this]);
		});

		// set the starting position for the lavalamp hover element: .back
		if (o.homeTop || o.homeLeft)
			$back.css({ left:o.homeLeft, top:o.homeTop, width:o.homeWidth, height:o.homeHeight });
		else
			$back.css({ left: ce.offsetLeft, top: ce.offsetTop, width: ce.offsetWidth, height: ce.offsetHeight });


		function move(el) {
			if (!el) el = ce;
			// .backLava element border check and animation fix
			var bx=0, by=0;
			if (!jQuery.browser.msie) {
				bx = ($back.outerWidth() - $back.innerWidth())/2;
				by = ($back.outerHeight() - $back.innerHeight())/2;
			}
			$back.stop()
			.animate({
				left: el.offsetLeft-bx,
				top: el.offsetTop-by,
				width: el.offsetWidth,
				height: el.offsetHeight
			}, o.speed, o.fx);
		};
	});
};
})(jQuery);

