https://walvoil.com/js/parallax/jquery.parallax-1.1.3.js

1/*
2Plugin: jQuery Parallax
3Version 1.1.3
4Author: Ian Lunn
5Twitter: @IanLunn
6Author URL: http://www.ianlunn.co.uk/
7Plugin URL: http://www.ianlunn.co.uk/plugins/jquery-parallax/
8
9Dual licensed under the MIT and GPL licenses:
10http://www.opensource.org/licenses/mit-license.php
11http://www.gnu.org/licenses/gpl.html
12*/
13
14(function( $ ){
15	var $window = $(window);
16	var windowHeight = $window.height();
17
18	$window.resize(function () {
19		windowHeight = $window.height();
20	});
21
22	$.fn.parallax = function(xpos, speedFactor, outerHeight) {
23		var $this = $(this);
24		var getHeight;
25		var firstTop;
26		var paddingTop = 0;
27		
28		//get the starting position of each element to have parallax applied to it		
29		$this.each(function(){
30		    firstTop = $this.offset().top;
31		});
32
33		if (outerHeight) {
34			getHeight = function(jqo) {
35				return jqo.outerHeight(true);
36			};
37		} else {
38			getHeight = function(jqo) {
39				return jqo.height();
40			};
41		}
42			
43		// setup defaults if arguments aren't specified
44		if (arguments.length < 1 || xpos === null) xpos = "50%";
45		if (arguments.length < 2 || speedFactor === null) speedFactor = 0.1;
46		if (arguments.length < 3 || outerHeight === null) outerHeight = true;
47		
48		// function to be called whenever the window is scrolled or resized
49		function update(){
50			var pos = $window.scrollTop();				
51
52			$this.each(function(){
53				var $element = $(this);
54				var top = $element.offset().top;
55				var height = getHeight($element);
56
57				// Check if totally above or totally below viewport
58				if (top + height < pos || top > pos + windowHeight) {
59					return;
60				}
61
62				$this.css('backgroundPosition', xpos + " " + Math.round((firstTop - pos) * speedFactor) + "px");
63			});
64		}		
65
66		$window.bind('scroll', update).resize(update);
67		update();
68	};
69})(jQuery);
70
71
72/**
73 * jQuery.LocalScroll - Animated scrolling navigation, using anchors.
74 * Copyright (c) 2007-2009 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
75 * Dual licensed under MIT and GPL.
76 * Date: 3/11/2009
77 * @author Ariel Flesler
78 * @version 1.2.7
79 **/
80;(function($){var l=location.href.replace(/#.*/,'');var g=$.localScroll=function(a){$('body').localScroll(a)};g.defaults={duration:1e3,axis:'y',event:'click',stop:true,target:window,reset:true};g.hash=function(a){if(location.hash){a=$.extend({},g.defaults,a);a.hash=false;if(a.reset){var e=a.duration;delete a.duration;$(a.target).scrollTo(0,a);a.duration=e}i(0,location,a)}};$.fn.localScroll=function(b){b=$.extend({},g.defaults,b);return b.lazy?this.bind(b.event,function(a){var e=$([a.target,a.target.parentNode]).filter(d)[0];if(e)i(a,e,b)}):this.find('a,area').filter(d).bind(b.event,function(a){i(a,this,b)}).end().end();function d(){return!!this.href&&!!this.hash&&this.href.replace(this.hash,'')==l&&(!b.filter||$(this).is(b.filter))}};function i(a,e,b){var d=e.hash.slice(1),f=document.getElementById(d)||document.getElementsByName(d)[0];if(!f)return;if(a)a.preventDefault();var h=$(b.target);if(b.lock&&h.is(':animated')||b.onBefore&&b.onBefore.call(b,a,f,h)===false)return;if(b.stop)h.stop(true);if(b.hash){var j=f.id==d?'id':'name',k=$('<a> </a>').attr(j,d).css({position:'absolute',top:$(window).scrollTop(),left:$(window).scrollLeft()});f[j]='';$('body').prepend(k);location=e.hash;k.remove();f[j]=d}h.scrollTo(f,b).trigger('notify.serialScroll',[f])}})(jQuery);
81
82
83/**
84 * jQuery.ScrollTo - Easy element scrolling using jQuery.
85 * Copyright (c) 2007-2009 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
86 * Dual licensed under MIT and GPL.
87 * Date: 5/25/2009
88 * @author Ariel Flesler
89 * @version 1.4.2
90 *
91 * http://flesler.blogspot.com/2007/10/jqueryscrollto.html
92 */
93;(function(d){var k=d.scrollTo=function(a,i,e){d(window).scrollTo(a,i,e)};k.defaults={axis:'xy',duration:parseFloat(d.fn.jquery)>=1.3?0:1};k.window=function(a){return d(window)._scrollable()};d.fn._scrollable=function(){return this.map(function(){var a=this,i=!a.nodeName||d.inArray(a.nodeName.toLowerCase(),['iframe','#document','html','body'])!=-1;if(!i)return a;var e=(a.contentWindow||a).document||a.ownerDocument||a;return d.browser.safari||e.compatMode=='BackCompat'?e.body:e.documentElement})};d.fn.scrollTo=function(n,j,b){if(typeof j=='object'){b=j;j=0}if(typeof b=='function')b={onAfter:b};if(n=='max')n=9e9;b=d.extend({},k.defaults,b);j=j||b.speed||b.duration;b.queue=b.queue&&b.axis.length>1;if(b.queue)j/=2;b.offset=p(b.offset);b.over=p(b.over);return this._scrollable().each(function(){var q=this,r=d(q),f=n,s,g={},u=r.is('html,body');switch(typeof f){case'number':case'string':if(/^([+-]=)?\d+(\.\d+)?(px|%)?$/.test(f)){f=p(f);break}f=d(f,this);case'object':if(f.is||f.style)s=(f=d(f)).offset()}d.each(b.axis.split(''),function(a,i){var e=i=='x'?'Left':'Top',h=e.toLowerCase(),c='scroll'+e,l=q[c],m=k.max(q,i);if(s){g[c]=s[h]+(u?0:l-r.offset()[h]);if(b.margin){g[c]-=parseInt(f.css('margin'+e))||0;g[c]-=parseInt(f.css('border'+e+'Width'))||0}g[c]+=b.offset[h]||0;if(b.over[h])g[c]+=f[i=='x'?'width':'height']()*b.over[h]}else{var o=f[h];g[c]=o.slice&&o.slice(-1)=='%'?parseFloat(o)/100*m:o}

93if(/^\d+$/.test(g[c]))g[c]=g[c]<=0?0:Math.min(g[c],m);if(!a&&b.queue){if(l!=g[c])t(b.onAfterFirst);delete g[c]}});t(b.onAfter);function t(a){r.animate(g,j,b.easing,a&&function(){a.call(this,n,b)})}}).end()};k.max=function(a,i){var e=i=='x'?'Width':'Height',h='scroll'+e;if(!d(a).is('html,body'))return a[h]-d(a)[e.toLowerCase()]();var c='client'+e,l=a.ownerDocument.documentElement,m=a.ownerDocument.body;return Math.max(l[h],m[h])-Math.min(l[c],m[c])};function p(a){return typeof a=='object'?a:{top:a,left:a}}})(jQuery);
94