diff --git a/web/skins/classic/js/skin.js b/web/skins/classic/js/skin.js
index e4eed0597..ded2d8ca4 100644
--- a/web/skins/classic/js/skin.js
+++ b/web/skins/classic/js/skin.js
@@ -319,11 +319,11 @@ function convertLabelFormat(LabelFormat, monitorName){
 
 function addVideoTimingTrack(video, LabelFormat, monitorName, duration, startTime){
 //This is a hacky way to handle changing the texttrack. If we ever upgrade vjs in a revamp replace this.  Old method preserved because it's the right way.
-  let cues = vid.textTracks()[0].cues();
-  let labelFormat = convertLabelFormat(LabelFormat, monitorName);
+  var cues = vid.textTracks()[0].cues();
+  var labelFormat = convertLabelFormat(LabelFormat, monitorName);
   startTime = moment(startTime);
 
-  for (let i = 0; i <= duration; i++) {
+  for (var i = 0; i <= duration; i++) {
     cues[i] = {id: i, index: i, startTime: i, Ca: i+1, text: startTime.format(labelFormat)};
     startTime.add(1, 's');
   }
@@ -361,21 +361,21 @@ function endOfResize(e) {
 
 function scaleToFit (baseWidth, baseHeight, scaleEl, bottomEl) {
   $j(window).on('resize', endOfResize)  //set delayed scaling when Scale to Fit is selected
-  let ratio = baseWidth / baseHeight;
-  let container = $j('#content');
-  let viewPort = $j(window);
+  var ratio = baseWidth / baseHeight;
+  var container = $j('#content');
+  var viewPort = $j(window);
 // jquery does not provide a bottom offet, and offset dows not include margins.  outerHeight true minus false gives total vertical margins.
-  let bottomLoc = bottomEl.offset().top + (bottomEl.outerHeight(true) - bottomEl.outerHeight()) + bottomEl.outerHeight(true);
-  let newHeight = viewPort.height() - (bottomLoc - scaleEl.outerHeight(true))
-  let newWidth = ratio * newHeight;
+  var bottomLoc = bottomEl.offset().top + (bottomEl.outerHeight(true) - bottomEl.outerHeight()) + bottomEl.outerHeight(true);
+  var newHeight = viewPort.height() - (bottomLoc - scaleEl.outerHeight(true))
+  var newWidth = ratio * newHeight;
   if (newWidth > container.innerWidth()) {
     newWidth = container.innerWidth();
     newHeight = newWidth / ratio;
   }
-  let autoScale = Math.round(newWidth / baseWidth * SCALE_BASE);
-  let scales = $j('#scale option').map(function() {return parseInt($j(this).val());}).get();
+  var autoScale = Math.round(newWidth / baseWidth * SCALE_BASE);
+  var scales = $j('#scale option').map(function() {return parseInt($j(this).val());}).get();
   scales.shift();
-  let closest;
+  var closest;
   $j(scales).each(function () { //Set zms scale to nearest regular scale.  Zoom does not like arbitrary scale values.
     if (closest == null || Math.abs(this - autoScale) < Math.abs(closest - autoScale)) {
       closest = this.valueOf();
diff --git a/web/skins/classic/views/js/event.js b/web/skins/classic/views/js/event.js
index 9981b1458..e2f913ede 100644
--- a/web/skins/classic/views/js/event.js
+++ b/web/skins/classic/views/js/event.js
@@ -1,7 +1,7 @@
 var vid = null;
 
 function vjsReplay() {
-  let endTime = (Date.parse(eventData.EndTime)).getTime();
+  var endTime = (Date.parse(eventData.EndTime)).getTime();
   switch(replayMode.value) {
     case 'none':
       break;
@@ -10,22 +10,22 @@ function vjsReplay() {
       break;
     case 'all':
       if (nextEventId == 0) {
-        let overLaid = $j("#videoobj");
+        var overLaid = $j("#videoobj");
         overLaid.append('<p class="vjsMessage" style="height: '+overLaid.height()+'px; line-height: '+overLaid.height()+'px;">No more events</p>');
       } else {
-        let nextStartTime = nextEventStartTime.getTime(); //nextEventStartTime.getTime() is a mootools workaround, highjacks Date.parse
+        var nextStartTime = nextEventStartTime.getTime(); //nextEventStartTime.getTime() is a mootools workaround, highjacks Date.parse
         if (nextStartTime <= endTime) {
          streamNext( true );
          return;
         }
-        let overLaid = $j("#videoobj");
+        var overLaid = $j("#videoobj");
         vid.pause();
         overLaid.append('<p class="vjsMessage" style="height: '+overLaid.height()+'px; line-height: '+overLaid.height()+'px;"></p>');
-        let gapDuration = (new Date().getTime()) + (nextStartTime - endTime);
-        let messageP = $j(".vjsMessage");
-        let x = setInterval(function() {
-          let now = new Date().getTime();
-          let remainder = new Date(Math.round(gapDuration - now)).toISOString().substr(11,8);
+        var gapDuration = (new Date().getTime()) + (nextStartTime - endTime);
+        var messageP = $j(".vjsMessage");
+        var x = setInterval(function() {
+          var now = new Date().getTime();
+          var remainder = new Date(Math.round(gapDuration - now)).toISOString().substr(11,8);
           messageP.html(remainder + ' to next event.');
           if (remainder < 0) {
             clearInterval(x);
@@ -70,7 +70,7 @@ function renderAlarmCues (containerEl) {
   var pixSkew = 0;
   var skip = 0;
 var num_cueFrames = cueFrames.length;
-  for ( let i = 0; i < num_cueFrames; i++ ) {
+  for ( var i = 0; i < num_cueFrames; i++ ) {
     skip = 0;
     frame = cueFrames[i];
     if (frame.Type == "Alarm" && alarmed == 0) { //From nothing to alarm.  End nothing and start alarm.
@@ -78,7 +78,7 @@ var num_cueFrames = cueFrames.length;
       if (frame.Delta == 0) continue;  //If event starts with an alarm or too few for a nonespan
       spanTimeEnd = frame.Delta * 100;
       spanTime = spanTimeEnd - spanTimeStart;
-      let pix = cueRatio * spanTime;
+      var pix = cueRatio * spanTime;
       pixSkew += pix - Math.round(pix);//average out the rounding errors.
       pix = Math.round(pix);
       if ((pixSkew > 1 || pixSkew < -1) && pix + Math.round(pixSkew) > 0) { //add skew if it's a pixel and won't zero out span. 
@@ -143,20 +143,20 @@ function setButtonState( element, butClass ) {
 }
 
 function changeScale() {
-  let scale = $j('#scale').val();
-  let newWidth;
-  let newHeight;
-  let autoScale;
-  let eventViewer;
-  let alarmCue = $j('div.alarmCue');
-  let bottomEl = streamMode == 'stills' ? $j('#eventImageNav') : $j('#replayStatus');
+  var scale = $j('#scale').val();
+  var newWidth;
+  var newHeight;
+  var autoScale;
+  var eventViewer;
+  var alarmCue = $j('div.alarmCue');
+  var bottomEl = streamMode == 'stills' ? $j('#eventImageNav') : $j('#replayStatus');
   if (streamMode == 'stills') {
     eventViewer = $j('#eventThumbs');
   } else {
     eventViewer = $j(vid ? '#videoobj' : '#evtStream');
   }
   if ( scale == "auto" ) {
-    let newSize = scaleToFit(eventData.Width, eventData.Height, eventViewer, bottomEl);
+    var newSize = scaleToFit(eventData.Width, eventData.Height, eventViewer, bottomEl);
     newWidth = newSize.width;
     newHeight = newSize.height;
     autoScale = newSize.autoScale;
@@ -419,8 +419,8 @@ function streamNext(action) {
     $j(".vjsMessage").remove();//This shouldn't happen
     if ( nextEventId == 0 ) { //handles deleting last event.
       pauseClicked();
-      let hideContainer = $j('#eventVideo');
-      let hideStream = $j(vid ? "#videoobj" : "#evtStream").height() + (vid ? 0 :$j("#progressBar").height());
+      var hideContainer = $j('#eventVideo');
+      var hideStream = $j(vid ? "#videoobj" : "#evtStream").height() + (vid ? 0 :$j("#progressBar").height());
       hideContainer.prepend('<p class="vjsMessage" style="height: ' + hideStream + 'px; line-height: ' + hideStream + 'px;">No more events</p>');
       if ( vid == null ) zmsBroke = true;
       return;
@@ -443,15 +443,15 @@ function streamNext(action) {
 }
 
 function vjsPanZoom (action, x, y) { //Pan and zoom with centering where the click occurs
-  let outer = $j('#videoobj');
-  let video = outer.children().first();
-  let zoom =  parseFloat($j('#zoomValue').html());
-  let zoomRate = .5;
-  let matrix = video.css('transform').split(',');
-  let currentPanX = parseFloat(matrix[4]);
-  let currentPanY = parseFloat(matrix[5]);
-  let xDist = outer.width()/2 - x //Click distance from center of view
-  let yDist = outer.height()/2 - y
+  var outer = $j('#videoobj');
+  var video = outer.children().first();
+  var zoom =  parseFloat($j('#zoomValue').html());
+  var zoomRate = .5;
+  var matrix = video.css('transform').split(',');
+  var currentPanX = parseFloat(matrix[4]);
+  var currentPanY = parseFloat(matrix[5]);
+  var xDist = outer.width()/2 - x //Click distance from center of view
+  var yDist = outer.height()/2 - y
   if (action == 'zoomOut') {
     zoom -= zoomRate;
     if (x && y) {
@@ -476,8 +476,8 @@ function vjsPanZoom (action, x, y) { //Pan and zoom with centering where the cli
     x = xDist + currentPanX;
     y = yDist + currentPanY;
   }
-  let limitX = ((zoom*outer.width()) - outer.width())/2; //Calculate outer bounds of video
-  let limitY = ((zoom*outer.height()) - outer.height())/2;
+  var limitX = ((zoom*outer.width()) - outer.width())/2; //Calculate outer bounds of video
+  var limitY = ((zoom*outer.height()) - outer.height())/2;
   x = Math.min(Math.max((x),-limitX),limitX); //Limit pan to outer bounds of video
   y = Math.min(Math.max((y),-limitY),limitY);
   video.css('transform', 'matrix('+zoom+', 0, 0, '+zoom+', '+x+', '+y+')');
@@ -950,7 +950,7 @@ function videoEvent() {
 
 // Called on each event load because each event can be a different width
 function drawProgressBar() {
-  let barWidth = $j('#evtStream').width();
+  var barWidth = $j('#evtStream').width();
   $j('#progressBar').css( 'width', barWidth );
 }
 
diff --git a/web/skins/classic/views/js/filter.js b/web/skins/classic/views/js/filter.js
index f752dbff7..461025b1a 100644
--- a/web/skins/classic/views/js/filter.js
+++ b/web/skins/classic/views/js/filter.js
@@ -1,8 +1,8 @@
 function validateForm ( form ) {
-  let rows = $j(form).find('tbody').eq(0).find('tr');
-  let obrCount = 0;
-  let cbrCount = 0;
-  for ( let i = 0; i < rows.length; i++ ) {
+  var rows = $j(form).find('tbody').eq(0).find('tr');
+  var obrCount = 0;
+  var cbrCount = 0;
+  for ( var i = 0; i < rows.length; i++ ) {
     if (rows.length > 2) {
       obrCount += parseInt(form.elements['filter[Query][terms][' + i + '][obr]'].value);
       cbrCount += parseInt(form.elements['filter[Query][terms][' + i + '][cbr]'].value);
@@ -59,7 +59,7 @@ function updateButtons( element ) {
 }
 
 function checkValue ( element ) {
-  let rows = $j(element).closest('tbody').children();
+  var rows = $j(element).closest('tbody').children();
   parseRows(rows);
   //clearValue(element);
 }
@@ -103,32 +103,32 @@ function deleteFilter( element, name ) {
 }
 
 function parseRows (rows) {
-  for (let rowNum = 0; rowNum < rows.length; rowNum++) { //Each row is a term
-    let queryPrefix = 'filter[Query][terms][';
-    let inputTds = rows.eq(rowNum).children();
+  for (var rowNum = 0; rowNum < rows.length; rowNum++) { //Each row is a term
+    var queryPrefix = 'filter[Query][terms][';
+    var inputTds = rows.eq(rowNum).children();
 
     if (rowNum == 0) inputTds.eq(0).html('&nbsp'); //Remove and from first term
     if (rowNum > 0) { //add and/or to 1+
-      let cnjVal = inputTds.eq(0).children().val();
-      let conjSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][cnj]').attr('id', queryPrefix + rowNum + '][cnj]');
+      var cnjVal = inputTds.eq(0).children().val();
+      var conjSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][cnj]').attr('id', queryPrefix + rowNum + '][cnj]');
       $j.each(conjTypes, function (i) {
         conjSelect.append('<option value="' + i + '" >' + i + '</option>');
       });
       inputTds.eq(0).html(conjSelect).children().val(cnjVal === undefined ? 'and' : cnjVal);
     }
 
-    let brackets = rows.length - 2;
+    var brackets = rows.length - 2;
     if (brackets > 0) { //add bracket select to all rows
-      let obrSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][obr]').attr('id', queryPrefix + rowNum + '][obr]');
-      let cbrSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][cbr]').attr('id', queryPrefix + rowNum + '][cbr]');
+      var obrSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][obr]').attr('id', queryPrefix + rowNum + '][obr]');
+      var cbrSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][cbr]').attr('id', queryPrefix + rowNum + '][cbr]');
       obrSelect.append('<option value="0"</option>');
       cbrSelect.append('<option value="0"</option>');
-      for (let i = 1; i <= brackets; i++) {//build bracket options
+      for (var i = 1; i <= brackets; i++) {//build bracket options
         obrSelect.append('<option value="' + i + '">' + '('.repeat(i) + '</option>');
         cbrSelect.append('<option value="' + i + '">' + ')'.repeat(i) + '</option>');
       }
-      let obrVal = inputTds.eq(1).children().val() != undefined ? inputTds.eq(1).children().val() : 0; //Save currently selected bracket option
-      let cbrVal = inputTds.eq(5).children().val() != undefined ? inputTds.eq(5).children().val() : 0;
+      var obrVal = inputTds.eq(1).children().val() != undefined ? inputTds.eq(1).children().val() : 0; //Save currently selected bracket option
+      var cbrVal = inputTds.eq(5).children().val() != undefined ? inputTds.eq(5).children().val() : 0;
       inputTds.eq(1).html(obrSelect).children().val(obrVal); //Set bracket contents and assign saved value
       inputTds.eq(5).html(cbrSelect).children().val(cbrVal);
     } else {
@@ -146,61 +146,61 @@ function parseRows (rows) {
 
     if ( attr == "Archived") { //Archived types
       inputTds.eq(3).html('equal to<input type="hidden" name="filter[Query][terms][' + rowNum + '][op]" value="=">');
-      let archiveSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
-      for (let i = 0; i < archiveTypes.length; i++) {
+      var archiveSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
+      for (var i = 0; i < archiveTypes.length; i++) {
         archiveSelect.append('<option value="' + i + '">' + archiveTypes[i] + '</option>');
       }
-      let archiveVal = inputTds.eq(4).children().val();
+      var archiveVal = inputTds.eq(4).children().val();
       inputTds.eq(4).html(archiveSelect).children().val(archiveVal).chosen({width: "101%"});
 
     } else if ( attr.indexOf('Weekday') >= 0 ) {  //Weekday selection
-      let weekdaySelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
-      for (let i = 0; i < weekdays.length; i++) {
+      var weekdaySelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
+      for (var i = 0; i < weekdays.length; i++) {
         weekdaySelect.append('<option value="' + i + '">' + weekdays[i] + '</option>');
       }
-      let weekdayVal = inputTds.eq(4).children().val();
+      var weekdayVal = inputTds.eq(4).children().val();
       inputTds.eq(4).html(weekdaySelect).children().val(weekdayVal).chosen({width: "101%"});
 
     } else if ( attr == 'StateId' ) { //Run state
-      let stateSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
-      for (let key in states) {
+      var stateSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
+      for (var key in states) {
         stateSelect.append('<option value="' + key + '">' + states[key] + '</option>');
       }
-      let stateVal = inputTds.eq(4).children().val();
+      var stateVal = inputTds.eq(4).children().val();
       inputTds.eq(4).html(stateSelect).children().val(stateVal).chosen({width: "101%"});
 
     } else if ( attr == 'ServerId' || attr == 'MonitorServerId' || attr == 'StorageServerId' || attr == 'FilterServerId' ) { //Select Server
-      let serverSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
-      for (let key in servers) {
+      var serverSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
+      for (var key in servers) {
         serverSelect.append('<option value="' + key + '">' + servers[key] + '</option>');
       }
-      let serverVal = inputTds.eq(4).children().val();
+      var serverVal = inputTds.eq(4).children().val();
       inputTds.eq(4).html(serverSelect).children().val(serverVal).chosen({width: "101%"});
 
     } else if ( attr == 'StorageId' ) { //Choose by storagearea
-      let storageSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
+      var storageSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
 			for ( key in storageareas ) {
         storageSelect.append('<option value="' + key + '">' + storageareas[key] + '</option>');
       }
-      let storageVal = inputTds.eq(4).children().val();
+      var storageVal = inputTds.eq(4).children().val();
       inputTds.eq(4).html(storageSelect).children().val(storageVal).chosen({width: "101%"});
 
     } else if ( attr == 'MonitorName' ) { //Monitor names
-      let monitorSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
-      for (let key in monitors) {
+      var monitorSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
+      for (var key in monitors) {
         monitorSelect.append('<option value="' + key + '">' + monitors[key] + '</option>');
       }
-      let monitorVal = inputTds.eq(4).children().val();
+      var monitorVal = inputTds.eq(4).children().val();
       inputTds.eq(4).html(monitorSelect).children().val(monitorVal);
     } else {  //Reset to regular text field and operator for everything that isn't special
-      let opSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][op]').attr('id', queryPrefix + rowNum + '][op]');
-      for (let key in opTypes) {
+      var opSelect = $j('<select></select>').attr('name', queryPrefix + rowNum + '][op]').attr('id', queryPrefix + rowNum + '][op]');
+      for (var key in opTypes) {
         opSelect.append('<option value="' + key + '">' + opTypes[key] + '</option>');
       }
-      let opVal = inputTds.eq(3).children().val();
+      var opVal = inputTds.eq(3).children().val();
       inputTds.eq(3).html(opSelect).children().val(opVal).chosen({width: "101%"});
-      let textInput = $j('<input></input>').attr('type', 'text').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
-      let textVal = inputTds.eq(4).children().val();
+      var textInput = $j('<input></input>').attr('type', 'text').attr('name', queryPrefix + rowNum + '][val]').attr('id', queryPrefix + rowNum + '][val]');
+      var textVal = inputTds.eq(4).children().val();
       inputTds.eq(4).html(textInput).children().val(textVal);
     }
     if ( attr.endsWith('DateTime') ) { //Start/End DateTime
@@ -212,7 +212,7 @@ function parseRows (rows) {
     }
 
     attr = inputTds.find("[name$='attr\\]']") // Set attr list id and name
-    let term = attr.attr('name').split(/[[\]]{1,2}/);
+    var term = attr.attr('name').split(/[[\]]{1,2}/);
     term.length--;
     term.shift();
     term[2] = rowNum;
@@ -223,7 +223,7 @@ function parseRows (rows) {
 }
 
 function stringFilter (term) {
-  let termString = '';
+  var termString = '';
   term.forEach(function(item) {
    termString += '[' + item + ']';
   });
@@ -231,23 +231,23 @@ function stringFilter (term) {
 }
 
 function addTerm( element ) {
-  let row = $j(element).closest('tr');
+  var row = $j(element).closest('tr');
   row.find('select').chosen("destroy");
-  let newRow = row.clone().insertAfter(row);
+  var newRow = row.clone().insertAfter(row);
   row.find('select').chosen({width: "101%"});
   newRow.find('select').each( function () { //reset new row to default
     this[0].selected = 'selected';
   }).chosen({width: "101%"});
   newRow.find('input[type="text"]').val('');
-  let rows = $j(row).parent().children();
+  var rows = $j(row).parent().children();
   parseRows(rows);
 }
 
 function delTerm( element ) {
-  let row = $j(element).closest('tr');
-  let rowParent = $j(row).parent();
+  var row = $j(element).closest('tr');
+  var rowParent = $j(row).parent();
   row.remove();
-  let rows = rowParent.children();
+  var rows = rowParent.children();
   parseRows(rows);
 }