window.Arrow=function(window,document){"use strict";function _increaseOpacity(milliseconds){var arrow=document.getElementById("arrow-"+browser);arrow.style.display="block";var i=0,ieI=0,x=setInterval(function(){i+=.1,ieI+=10,"msie"===browser&&8>=browserVersion?arrow.filters&&(arrow.filters.item("DXImageTransform.Microsoft.Alpha").opacity=ieI):arrow.style.opacity=i},50);setTimeout(function(){clearInterval(x)},600),setTimeout(function(){_hide()},milliseconds||6e3)}
function _decreaseOpacity(){var arrow=document.getElementById("arrow-"+browser),i=1,ieI=100,x=setInterval(function(){i-=.1,ieI-=10,"msie"===browser&&8>=browserVersion?arrow.filters&&(arrow.filters.item("DXImageTransform.Microsoft.Alpha").opacity=ieI):arrow.style.opacity=i},50);setTimeout(function(){clearInterval(x),arrow.style.display="none"},600)}
function _applyStyleModern(node){node.style.position="fixed",node.style.zIndex=999,node.style.display="none",node.style.height="180px",node.style.width="180px",node.style.opacity=0,node.style.backgroundImage="url(assets/img/arrow.png)",node.style.backgroundRepeat="no-repeat",node.style.backgroundSize="100%",node.style.backgroundPositionX="0",node.style.backgroundPositionY="0"}
function _applyStyleIE8(node){node.style.top="10px",node.style.left="20px";var opacity="progid:DXImageTransform.Microsoft.Alpha(opacity=0) ",imgSrc='progid:DXImageTransform.Microsoft.AlphaImageLoader(src="assets/img/arrow.png", sizingMethod="scale") ',rotation='progid:DXImageTransform.Microsoft.Matrix(M11=1, M12=1.2246063538223773e-16, M21=-1.2246063538223773e-16, M22=-1, SizingMethod="auto expand") ';node.style.filter=opacity+imgSrc+rotation}
function _applyStyleMs(node){node.style.bottom="50px",node.style.left="67%"}
function _applyStyleMoz(node){node.style.backgroundImage="url(assets/img/arrow2.png)",node.style.top="0px",node.style.right="37px"}
function _applyStyleWebkit(node){node.style.bottom="50px",node.style.left="20px"}
function _setStyleType(node){_applyStyleModern(node),"msie"===browser?8===browserVersion?_applyStyleIE8(node):(9===browserVersion||10===browserVersion)&&_applyStyleMs(node):"chrome"===browser||"opera"===browser?_applyStyleWebkit(node):"safari"===browser?_applyStyleSafari(node):"IE11"===browser||"edge"===browser?_applyStyleMs(node):"firefox"===browser&&browserVersion>=20&&_applyStyleMoz(node)}
function _buildArrow(){var div=document.createElement("div");return div.setAttribute("id","arrow-"+browser),arrowNode=div,div}
function _injectNode(node){document.body.appendChild(node)}
function _isExist(){return!!document.getElementById("arrow-"+browser)}
function _initArrow(){var arrow=_buildArrow();_setStyleType(arrow),_calculateArrowPosition(),_injectNode(arrow),_addWindowEvent("resize",_calculateArrowPosition),_addWindowEvent("scroll",_calculateArrowPosition)}
function _addWindowEvent(event,functionReference){window.addEventListener?window.addEventListener(event,functionReference,!1):window.attachEvent&&window.attachEvent(event,functionReference)}
function _calculateArrowPosition(){"number"==typeof window.innerWidth?(visibleWidth=window.innerWidth,visibleHeight=window.innerHeight):document.documentElement&&(document.documentElement.clientWidth||document.documentElement.clientHeight)&&(visibleWidth=document.documentElement.clientWidth,visibleHeight=document.documentElement.clientHeight),"msie"===browser&&9===browserVersion&&(1005>visibleWidth?arrowNode.style.bottom="85px":visibleWidth>1006&&(arrowNode.style.bottom="50px"))}
function _hide(){if(!_isExist())throw "Invalid usage: There are no arrows on the page.";_decreaseOpacity()}
function show(seconds){if(!_isExist())throw "Invalid usage: arrow does not exist";_increaseOpacity(seconds)}
var arrowNode,version="0.1.9",Arrow={},browser="",browserVersion=0,visibleHeight=0,visibleWidth=0;return function(){var tem,N=navigator.appName,ua=navigator.userAgent,M=ua.match(/(opera|chrome|safari|firefox|msie)\/?\s*(\.?\d+(\.\d+)*)/i);M&&null!=(tem=ua.match(/version\/([\.\d]+)/i))&&(M[2]=tem[1]),M=M?[M[1],M[2]]:[N,navigator.appVersion,"-?"],browser="netscape"==M[0].toLowerCase()?"IE11":-1!=ua.toLowerCase().indexOf("edge")?"edge":M[0].toLowerCase(),browserVersion=parseInt(M[1],10)}(),_initArrow(),Arrow._version=version,Arrow._browser=browser,Arrow._browserVersion=browserVersion,Arrow.show=show,Arrow}(window,window.document);