!function(d,c){"use strict";function p(t,e){for(var i in e)e.hasOwnProperty(i)&&(t[i]=e[i])}function u(t){return parseFloat(t)||0}function m(t){for(var e=0;t;)e+=t.offsetTop,t=t.offsetParent;return e}var e=function(){function o(t,e){for(var i=0;i<e.length;i++){var o=e[i];o.enumerable=o.enumerable||!1,o.configurable=!0,"value"in o&&(o.writable=!0),Object.defineProperty(t,o.key,o)}}return function(t,e,i){return e&&o(t.prototype,e),i&&o(t,i),t}}(),g=!1;if(d.getComputedStyle){var i=c.createElement("div");["","-webkit-","-moz-","-ms-"].some(function(t){try{i.style.position=t+"sticky"}catch(t){}return""!=i.style.position})&&(g=!0)}else g=!0;var _="undefined"!=typeof ShadowRoot,s={top:null,left:null},r=[],a=function(){function t(e){if(function(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}(this,t),!(e instanceof HTMLElement))throw new Error("First argument must be HTMLElement");if(r.some(function(t){return t._node===e}))throw new Error("Stickyfill is 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ShadowRoot?o.host:o,s=t.getBoundingClientRect(),r=n.getBoundingClientRect(),a=getComputedStyle(n);this._parent={node:n,styles:{position:n.style.position},offsetHeight:n.offsetHeight},this._offsetToWindow={left:s.left,right:c.documentElement.clientWidth-s.right},this._offsetToParent={top:s.top-r.top-u(a.borderTopWidth),left:s.left-r.left-u(a.borderLeftWidth),right:-s.right+r.right-u(a.borderRightWidth)},this._styles={position:t.style.position,top:t.style.top,bottom:t.style.bottom,left:t.style.left,right:t.style.right,width:t.style.width,marginTop:t.style.marginTop,marginLeft:t.style.marginLeft,marginRight:t.style.marginRight};var f=u(i.top);this._limits={start:s.top+d.pageYOffset-f,end:r.top+d.pageYOffset+n.offsetHeight-u(a.borderBottomWidth)-t.offsetHeight-f-u(i.marginBottom)};var l=a.position;"absolute"!=l&&"relative"!=l&&(n.style.position="relative"),this._recalcPosition();var h=this._clone={};h.node=c.createElement("div"),p(h.node.style,{width:s.right-s.left+"px",height:s.bottom-s.top+"px",marginTop:i.marginTop,marginBottom:i.marginBottom,marginLeft:i.marginLeft,marginRight:i.marginRight,cssFloat:i.cssFloat,padding:0,border:0,borderSpacing:0,fontSize:"1em",position:"static"}),o.insertBefore(h.node,t),h.docOffsetTop=m(h.node)}}}},{key:"_recalcPosition",value:function(){if(this._active&&!this._removed){var t=s.top<=this._limits.start?"start":s.top>=this._limits.end?"end":"middle";if(this._stickyMode!=t){switch(t){case"start":p(this._node.style,{position:"absolute",left:this._offsetToParent.left+"px",right:this._offsetToParent.right+"px",top:this._offsetToParent.top+"px",bottom:"auto",width:"auto",marginLeft:0,marginRight:0,marginTop:0});break;case"middle":p(this._node.style,{position:"fixed",left:this._offsetToWindow.left+"px",right:this._offsetToWindow.right+"px",top:this._styles.top,bottom:"auto",width:"auto",marginLeft:0,marginRight:0,marginTop:0});break;case"end":p(this._node.style,{position:"absolute",left:this._offsetToParent.left+"px",right:this._offsetToParent.right+"px",top:"auto",bottom:0,width:"auto",marginLeft:0,marginRight:0})}this._stickyMode=t}}}},{key:"_fastCheck",value:function(){this._active&&!this._removed&&(1<Math.abs(m(this._clone.node)-this._clone.docOffsetTop)||1<Math.abs(this._parent.node.offsetHeight-this._parent.offsetHeight))&&this.refresh()}},{key:"_deactivate",value:function(){var e=this;this._active&&!this._removed&&(this._clone.node.parentNode.removeChild(this._clone.node),delete this._clone,p(this._node.style,this._styles),delete this._styles,r.some(function(t){return t!==e&&t._parent&&t._parent.node===e._parent.node})||p(this._parent.node.style,this._parent.styles),delete this._parent,this._stickyMode=null,this._active=!1,delete this._offsetToWindow,delete this._offsetToParent,delete this._limits)}},{key:"remove",value:function(){var i=this;this._deactivate(),r.some(function(t,e){if(t._node===i._node)return r.splice(e,1),!0}),this._removed=!0}}]),t}(),f={stickies:r,Sticky:a,addOne:function(t){if(!(t instanceof HTMLElement)){if(!t.length||!t[0])return;t=t[0]}for(var e=0;e<r.length;e++)if(r[e]._node===t)return r[e];return new a(t)},add:function(i){if(i instanceof HTMLElement&&(i=[i]),i.length){for(var o=[],n=0;n<i.length;n++)!function(t){var e=i[n];e instanceof HTMLElement?r.some(function(t){if(t._node===e)return o.push(t),!0})||o.push(new a(e)):o.push(void 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c&&(o="webkitHidden",n="webkitvisibilitychange"),n?(c[o]||e(),c.addEventListener(n,function(){c[o]?clearInterval(i):e()})):e()}(),"undefined"!=typeof module&&module.exports?module.exports=f:d.Stickyfill=f}(window,document);