next() previous()

function next() {
var thecurrentlist = document.getElementById("sns20170311sa1558thecurrentlist")
var thecurrentlistarray = thecurrentlist.innerHTML.split(" ")
var thecurrentlisttype = thecurrentlistarray[0]

thecurrentlistarray.shift()

var thecurrentpattern = thecurrentlistarray.join(" ")

var thislist = document.getElementById("sns20170311sa1558" + thecurrentlisttype)

var thislistarray = thislist.innerHTML.split("<br />")

var thischart = document.getElementById("sns20170311sa1558this" + thecurrentlisttype)

var thischartnumber = parseInt(thischart.innerHTML)

for (var i = thischartnumber + 1; i < thislistarray.length; i = i + 1) {

var thischartrecord = thislistarray[i]

var thischartrecordarray = thischartrecord.split(" ")

thischartrecordarray.shift()

var thischartpattern = thischartrecordarray.join(" ")

if (thischartpattern === thecurrentpattern) {

thischart.innerHTML = i

i = thislistarray.length}}

getachart()}

function previous() {
var thecurrentlist = document.getElementById("sns20170311sa1558thecurrentlist")
var thecurrentlistarray = thecurrentlist.innerHTML.split(" ")
var thecurrentlisttype = thecurrentlistarray[0]

thecurrentlistarray.shift()

var thecurrentpattern = thecurrentlistarray.join(" ")

var thislist = document.getElementById("sns20170311sa1558" + thecurrentlisttype)

var thislistarray = thislist.innerHTML.split("<br />")

var thischart = document.getElementById("sns20170311sa1558this" + thecurrentlisttype)

var thischartnumber = parseInt(thischart.innerHTML)

for (var i = thischartnumber - 1; i > -1; i = i - 1) {

var thischartrecord = thislistarray[i]

var thischartrecordarray = thischartrecord.split(" ")

thischartrecordarray.shift()

var thischartpattern = thischartrecordarray.join(" ")

if (thischartpattern === thecurrentpattern) {

thischart.innerHTML = i

i = thislistarray.length}}

getachart()}