/*! Stellar.js v0.6.2 | Copyright 2014, Mark Dalgleish | http://markdalgleish.com/projects/stellar.js | http://markdalgleish.mit-license.org */
/* Modified: bug fixed */
/* - Default Offset: https://github.com/markdalgleish/stellar.js/issues/89 */
/* - _handleScrollEvent should be inside window load event */
(function(e,t,n,r){function d(t,n){this.element=t;this.options=e.extend({},s,n);this._defaults=s;this._name=i;this.init()}var i="stellar",s={scrollProperty:"scroll",positionProperty:"position",horizontalScrolling:true,verticalScrolling:true,horizontalOffset:0,verticalOffset:0,responsive:false,parallaxBackgrounds:true,parallaxElements:true,hideDistantElements:true,hideElement:function(e){e.hide()},showElement:function(e){e.show()}},o={scroll:{getLeft:function(e){return e.scrollLeft()},setLeft:function(e,t){e.scrollLeft(t)},getTop:function(e){return e.scrollTop()},setTop:function(e,t){e.scrollTop(t)}},position:{getLeft:function(e){return parseInt(e.css("left"),10)*-1},getTop:function(e){return parseInt(e.css("top"),10)*-1}},margin:{getLeft:function(e){return parseInt(e.css("margin-left"),10)*-1},getTop:function(e){return parseInt(e.css("margin-top"),10)*-1}},transform:{getLeft:function(e){var t=getComputedStyle(e[0])[f];return t!=="none"?parseInt(t.match(/(-?[0-9]+)/g)[4],10)*-1:0},getTop:function(e){var t=getComputedStyle(e[0])[f];return t!=="none"?parseInt(t.match(/(-?[0-9]+)/g)[5],10)*-1:0}}},u={position:{setLeft:function(e,t){e.css("left",t)},setTop:function(e,t){e.css("top",t)}},transform:{setPosition:function(e,t,n,r,i){e[0].style[f]="translate3d("+(t-n)+"px, "+(r-i)+"px, 0)"}}},a=function(){var t=/^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/,n=e("script")[0].style,r="",i;for(i in n){if(t.test(i)){r=i.match(t)[0];break}}if("WebkitOpacity"in n){r="Webkit"}if("KhtmlOpacity"in n){r="Khtml"}return function(e){return r+(r.length>0?e.charAt(0).toUpperCase()+e.slice(1):e)}}(),f=a("transform"),l=e("<div />",{style:"background:#fff"}).css("background-position-x")!==r,c=l?function(e,t,n){e.css({"background-position-x":t,"background-position-y":n})}:function(e,t,n){e.css("background-position",t+" "+n)},h=l?function(e){return[e.css("background-position-x"),e.css("background-position-y")]}:function(e){return e.css("background-position").split(" ")},p=t.requestAnimationFrame||t.webkitRequestAnimationFrame||t.mozRequestAnimationFrame||t.oRequestAnimationFrame||t.msRequestAnimationFrame||function(e){setTimeout(e,1e3/60)};d.prototype={init:function(){this.options.name=i+"_"+Math.floor(Math.random()*1e9);this._defineElements();this._defineGetters();this._defineSetters();this._handleWindowLoadAndResize();this._detectViewport();this.refresh({firstLoad:true});if(this.options.scrollProperty==="scroll"){this._handleScrollEvent()}else{this._startAnimationLoop()}},_defineElements:function(){if(this.element===n.body)this.element=t;this.$scrollElement=e(this.element);this.$element=this.element===t?e("body"):this.$scrollElement;this.$viewportElement=this.options.viewportElement!==r?e(this.options.viewportElement):this.$scrollElement[0]===t||this.options.scrollProperty==="scroll"?this.$scrollElement:this.$scrollElement.parent()},_defineGetters:function(){var e=this,t=o[e.options.scrollProperty];this._getScrollLeft=function(){return t.getLeft(e.$scrollElement)};this._getScrollTop=function(){return t.getTop(e.$scrollElement)}},_defineSetters:function(){var t=this,n=o[t.options.scrollProperty],r=u[t.options.positionProperty],i=n.setLeft,s=n.setTop;this._setScrollLeft=typeof i==="function"?function(e){i(t.$scrollElement,e)}:e.noop;this._setScrollTop=typeof s==="function"?function(e){s(t.$scrollElement,e)}:e.noop;this._setPosition=r.setPosition||function(e,n,i,s,o){if(t.options.horizontalScrolling){r.setLeft(e,n,i)}if(t.options.verticalScrolling){r.setTop(e,s,o)}}},_handleWindowLoadAndResize:function(){var n=this,r=e(t);if(n.options.responsive){r.bind("load."+this.name,function(){n.refresh()})}r.bind("resize."+this.name,function(){n._detectViewport();if(n.options.responsive){n.refresh()}})},refresh:function(n){var r=this,i=r._getScrollLeft(),s=r._getScrollTop();if(!n||!n.firstLoad){this._reset()}this._setScrollLeft(0);this._setScrollTop(0);this._setOffsets();this._findParticles();this._findBackgrounds();if(n&&n.firstLoad&&/WebKit/.test(navigator.userAgent)){e(t).load(function(){var e=r._getScrollLeft(),t=r._getScrollTop();r._setScrollLeft(e+1);r._setScrollTop(t+1);r._setScrollLeft(e);r._setScrollTop(t)})}this._setScrollLeft(i);this._setScrollTop(s)},_detectViewport:function(){var e=this.$viewportElement.offset(),t=e!==null&&e!==r;this.viewportWidth=this.$viewportElement.width();this.viewportHeight=this.$viewportElement.height();this.viewportOffsetTop=t?e.top:0;this.viewportOffsetLeft=t?e.left:0},_findParticles:function(){var t=this,n=this._getScrollLeft(),i=this._getScrollTop();if(this.particles!==r){for(var s=this.particles.length-1;s>=0;s--){this.particles[s].$element.data("stellar-elementIsActive",r)}}this.particles=[];if(!this.options.parallaxElements)return;this.$element.find("[data-stellar-ratio]").each(function(n){var i=e(this),s,o,u,a,f,l,c,h,p,d=0,v=0,m=0,g=0;if(!i.data("stellar-elementIsActive")){i.data("stellar-elementIsActive",this)}else if(i.data("stellar-elementIsActive")!==this){return}t.options.showElement(i);if(!i.data("stellar-startingLeft")){i.data("stellar-startingLeft",i.css("left"));i.data("stellar-startingTop",i.css("top"))}else{i.css("left",i.data("stellar-startingLeft"));i.css("top",i.data("stellar-startingTop"))}u=i.position().left;a=i.position().top;f=i.css("margin-left")==="auto"?0:parseInt(i.css("margin-left"),10);l=i.css("margin-top")==="auto"?0:parseInt(i.css("margin-top"),10);h=i.offset().left-f;p=i.offset().top-l;i.parents().each(function(){var t=e(this);if(t.data("stellar-offset-parent")===true){d=m;v=g;c=t;return false}else{m+=t.position().left;g+=t.position().top}});s=i.data("stellar-horizontal-offset")!==r?i.data("stellar-horizontal-offset"):c!==r&&c.data("stellar-horizontal-offset")!==r?c.data("stellar-horizontal-offset"):t.horizontalOffset;o=i.data("stellar-vertical-offset")!==r?i.data("stellar-vertical-offset"):c!==r&&c.data("stellar-vertical-offset")!==r?c.data("stellar-vertical-offset"):t.verticalOffset;t.particles.push({$element:i,$offsetParent:c,isFixed:i.css("position")==="fixed",horizontalOffset:s,verticalOffset:o,startingPositionLeft:u,startingPositionTop:a,startingOffsetLeft:h,startingOffsetTop:p,parentOffsetLeft:d,parentOffsetTop:v,stellarRatio:i.data("stellar-ratio")!==r?i.data("stellar-ratio"):1,width:i.outerWidth(true),height:i.outerHeight(true),isHidden:false})})},_findBackgrounds:function(){var t=this,n=this._getScrollLeft(),i=this._getScrollTop(),s;this.backgrounds=[];if(!this.options.parallaxBackgrounds)return;s=this.$element.find("[data-stellar-background-ratio]");if(this.$element.data("stellar-background-ratio")){s=s.add(this.$element)}s.each(function(){var s=e(this),o=h(s),u,a,f,l,p,d,v,m,g,y=0,b=0,w=0,E=0;if(!s.data("stellar-backgroundIsActive")){s.data("stellar-backgroundIsActive",this)}else if(s.data("stellar-backgroundIsActive")!==this){return}if(!s.data("stellar-backgroundStartingLeft")){s.data("stellar-backgroundStartingLeft",o[0]);s.data("stellar-backgroundStartingTop",o[1])}else{c(s,s.data("stellar-backgroundStartingLeft"),s.data("stellar-backgroundStartingTop"))}p=s.css("margin-left")==="auto"?0:parseInt(s.css("margin-left"),10);d=s.css("margin-top")==="auto"?0:parseInt(s.css("margin-top"),10);v=s.offset().left-p-n;m=s.offset().top-d-i;s.parents().each(function(){var t=e(this);if(t.data("stellar-offset-parent")===true){y=w;b=E;g=t;return false}else{w+=t.position().left;E+=t.position().top}});u=s.data("stellar-horizontal-offset")!==r?s.data("stellar-horizontal-offset"):g!==r&&g.data("stellar-horizontal-offset")!==r?g.data("stellar-horizontal-offset"):t.horizontalOffset;a=s.data("stellar-vertical-offset")!==r?s.data("stellar-vertical-offset"):g!==r&&g.data("stellar-vertical-offset")!==r?g.data("stellar-vertical-offset"):t.verticalOffset;t.backgrounds.push({$element:s,$offsetParent:g,isFixed:s.css("background-attachment")==="fixed",horizontalOffset:u,verticalOffset:a,startingValueLeft:o[0],startingValueTop:o[1],startingBackgroundPositionLeft:isNaN(parseInt(o[0],10))||-1!==o[0].indexOf("%")?0:parseInt(o[0],10),startingBackgroundPositionTop:isNaN(parseInt(o[1],10))||-1!==o[1].indexOf("%")?0:parseInt(o[1],10),startingPositionLeft:s.position().left,startingPositionTop:s.position().top,startingOffsetLeft:v,startingOffsetTop:m,parentOffsetLeft:y,parentOffsetTop:b,stellarRatio:s.data("stellar-background-ratio")===r?1:s.data("stellar-background-ratio")})})},_reset:function(){var e,t,n,r,i;for(i=this.particles.length-1;i>=0;i--){e=this.particles[i];t=e.$element.data("stellar-startingLeft");n=e.$element.data("stellar-startingTop");this._setPosition(e.$element,t,t,n,n);this.options.showElement(e.$element);e.$element.data("stellar-startingLeft",null).data("stellar-elementIsActive",null).data("stellar-backgroundIsActive",null)}for(i=this.backgrounds.length-1;i>=0;i--){r=this.backgrounds[i];r.$element.data("stellar-backgroundStartingLeft",null).data("stellar-backgroundStartingTop",null);c(r.$element,r.startingValueLeft,r.startingValueTop)}},destroy:function(){this._reset();this.$scrollElement.unbind("resize."+this.name).unbind("scroll."+this.name);this._animationLoop=e.noop;e(t).unbind("load."+this.name).unbind("resize."+this.name)},_setOffsets:function(){var n=this,r=e(t);r.unbind("resize.horizontal-"+this.name).unbind("resize.vertical-"+this.name);if(typeof this.options.horizontalOffset==="function"){this.horizontalOffset=this.options.horizontalOffset();r.bind("resize.horizontal-"+this.name,function(){n.horizontalOffset=n.options.horizontalOffset()})}else{this.horizontalOffset=this.options.horizontalOffset}if(typeof this.options.verticalOffset==="function"){this.verticalOffset=this.options.verticalOffset();r.bind("resize.vertical-"+this.name,function(){n.verticalOffset=n.options.verticalOffset()})}else{this.verticalOffset=this.options.verticalOffset}},_repositionElements:function(){var e=this._getScrollLeft(),t=this._getScrollTop(),n,r,i,s,o,u,a,f=true,l=true,h,p,d,v,m;if(this.currentScrollLeft===e&&this.currentScrollTop===t&&this.currentWidth===this.viewportWidth&&this.currentHeight===this.viewportHeight){return}else{this.currentScrollLeft=e;this.currentScrollTop=t;this.currentWidth=this.viewportWidth;this.currentHeight=this.viewportHeight}for(m=this.particles.length-1;m>=0;m--){i=this.particles[m];s=i.isFixed?1:0;if(this.options.horizontalScrolling){h=(e+i.horizontalOffset+this.viewportOffsetLeft+i.startingPositionLeft-i.startingOffsetLeft+i.parentOffsetLeft)*-(i.stellarRatio+s-1)+i.startingPositionLeft;d=h-i.startingPositionLeft+i.startingOffsetLeft}else{h=i.startingPositionLeft;d=i.startingOffsetLeft}if(this.options.verticalScrolling){p=(t+i.verticalOffset+this.viewportOffsetTop+i.startingPositionTop-i.startingOffsetTop+i.parentOffsetTop)*-(i.stellarRatio+s-1)+i.startingPositionTop;v=p-i.startingPositionTop+i.startingOffsetTop}else{p=i.startingPositionTop;v=i.startingOffsetTop}if(this.options.hideDistantElements){l=!this.options.horizontalScrolling||d+i.width>(i.isFixed?0:e)&&d<(i.isFixed?0:e)+this.viewportWidth+this.viewportOffsetLeft;f=!this.options.verticalScrolling||v+i.height>(i.isFixed?0:t)&&v<(i.isFixed?0:t)+this.viewportHeight+this.viewportOffsetTop}if(l&&f){if(i.isHidden){this.options.showElement(i.$element);i.isHidden=false}this._setPosition(i.$element,h,i.startingPositionLeft,p,i.startingPositionTop)}else{if(!i.isHidden){this.options.hideElement(i.$element);i.isHidden=true}}}for(m=this.backgrounds.length-1;m>=0;m--){o=this.backgrounds[m];s=o.isFixed?0:1;u=this.options.horizontalScrolling?(e+o.horizontalOffset-this.viewportOffsetLeft-o.startingOffsetLeft+o.parentOffsetLeft-o.startingBackgroundPositionLeft)*(s-o.stellarRatio)+"px":o.startingValueLeft;a=this.options.verticalScrolling?(t+o.verticalOffset-this.viewportOffsetTop-o.startingOffsetTop+o.parentOffsetTop-o.startingBackgroundPositionTop)*(s-o.stellarRatio)+"px":o.startingValueTop;c(o.$element,u,a)}},_handleScrollEvent:function(){var n=this,r=false;var i=function(){n._repositionElements();r=false};var s=function(){if(!r){p(i);r=true}};e(t).bind("load."+n.name,function(){n.$scrollElement.bind("scroll."+n.name,s);s()})},_startAnimationLoop:function(){var e=this;this._animationLoop=function(){p(e._animationLoop);e._repositionElements()};this._animationLoop()}};e.fn[i]=function(t){var n=arguments;if(t===r||typeof t==="object"){return this.each(function(){if(!e.data(this,"plugin_"+i)){e.data(this,"plugin_"+i,new d(this,t))}})}else if(typeof t==="string"&&t[0]!=="_"&&t!=="init"){return this.each(function(){var r=e.data(this,"plugin_"+i);if(r instanceof d&&typeof r[t]==="function"){r[t].apply(r,Array.prototype.slice.call(n,1))}if(t==="destroy"){e.data(this,"plugin_"+i,null)}})}};e[i]=function(n){var r=e(t);return r.stellar.apply(r,Array.prototype.slice.call(arguments,0))};e[i].scrollProperty=o;e[i].positionProperty=u;t.Stellar=d})(jQuery,this,document)