diff --git a/koha-tmpl/intranet-tmpl/prog/js/pages/batchMod.js b/koha-tmpl/intranet-tmpl/prog/js/pages/batchMod.js
index 4d15973fd1..f71cc3b102 100644
--- a/koha-tmpl/intranet-tmpl/prog/js/pages/batchMod.js
+++ b/koha-tmpl/intranet-tmpl/prog/js/pages/batchMod.js
@@ -1,86 +1,86 @@
+/* global dataTablesDefaults allColumns */
 // Set expiration date for cookies
-    var date = new Date();
-    date.setTime(date.getTime()+(365*24*60*60*1000));
-    var expiration = date.toGMTString();
+var date = new Date();
+date.setTime(date.getTime() + (365 * 24 * 60 * 60 * 1000));
 
-
-function hideColumns(){
-  valCookie = $.cookie("showColumns");
-  if(valCookie){
-    valCookie = valCookie.split("/");
-    $("#showall").prop("checked", false).parent().removeClass("selected");
-    for( i=0; i<valCookie.length; i++ ){
-      if(valCookie[i] !== ''){
-        index = valCookie[i] - 3;
-        $("#itemst td:nth-child("+valCookie[i]+"),#itemst th:nth-child("+valCookie[i]+")").toggle();
-        $("#checkheader"+index).prop("checked", false).parent().removeClass("selected");
-      }
+function hideColumns() {
+    var valCookie = $.cookie("showColumns");
+    if (valCookie) {
+        valCookie = valCookie.split("/");
+        $("#showall").prop("checked", false).parent().removeClass("selected");
+        for ( var i = 0; i < valCookie.length; i++ ) {
+            if (valCookie[i] !== '') {
+                var index = valCookie[i] - 3;
+                $("#itemst td:nth-child(" + valCookie[i] + "),#itemst th:nth-child(" + valCookie[i] + ")").toggle();
+                $("#checkheader" + index).prop("checked", false).parent().removeClass("selected");
+            }
+        }
     }
-  }
 }
 
 function hideColumn(num) {
-  $("#hideall,#showall").prop("checked", false).parent().removeClass("selected");
-  valCookie = $.cookie("showColumns");
-  // set the index of the table column to hide
-  $("#"+num).parent().removeClass("selected");
-  var hide = Number(num.replace("checkheader","")) + 3;
-  // hide header and cells matching the index
-  $("#itemst td:nth-child("+hide+"),#itemst th:nth-child("+hide+")").toggle();
-  // set or modify cookie with the hidden column's index
-  if(valCookie){
-    valCookie = valCookie.split("/");
-    var found = false;
-    for( $i=0; $i<valCookie.length; $i++ ){
-        if (hide == valCookie[i]) {
-            found = true;
-            break;
+    $("#hideall,#showall").prop("checked", false).parent().removeClass("selected");
+    var valCookie = $.cookie("showColumns");
+    // set the index of the table column to hide
+    $("#" + num).parent().removeClass("selected");
+    var hide = Number(num.replace("checkheader", "")) + 3;
+    // hide header and cells matching the index
+    $("#itemst td:nth-child(" + hide + "),#itemst th:nth-child(" + hide + ")").toggle();
+    // set or modify cookie with the hidden column's index
+    if (valCookie) {
+        valCookie = valCookie.split("/");
+        var found = false;
+        for ( var i = 0; i < valCookie.length; i++ ) {
+            if (hide == valCookie[i]) {
+                found = true;
+                break;
+            }
         }
+        if (!found) {
+            valCookie.push(hide);
+            var cookieString = valCookie.join("/");
+            $.cookie("showColumns", cookieString, { expires: date, path: '/' });
+        }
+    } else {
+        $.cookie("showColumns", hide, { expires: date, path: '/' });
     }
-    if( !found ){
-        valCookie.push(hide);
-        var cookieString = valCookie.join("/");
-        $.cookie("showColumns", cookieString, { expires : date, path: '/' });
-    }
-  } else {
-        $.cookie("showColumns", hide, { expires : date, path: '/' });
-  }
 }
 
 // Array Remove - By John Resig (MIT Licensed)
 // http://ejohn.org/blog/javascript-array-remove/
-Array.prototype.remove = function(from, to) {
-  var rest = this.slice((to || from) + 1 || this.length);
-  this.length = from < 0 ? this.length + from : from;
-  return this.push.apply(this, rest);
+Array.prototype.remove = function (from, to) {
+    var rest = this.slice((to || from) + 1 || this.length);
+    this.length = from < 0 ? this.length + from : from;
+    return this.push.apply(this, rest);
 };
 
-function showColumn(num){
-  $("#hideall").prop("checked", false).parent().removeClass("selected");
-  $("#"+num).parent().addClass("selected");
-  valCookie = $.cookie("showColumns");
-  // set the index of the table column to hide
-  show = Number(num.replace("checkheader","")) + 3;
-  // hide header and cells matching the index
-  $("#itemst td:nth-child("+show+"),#itemst th:nth-child("+show+")").toggle();
-  // set or modify cookie with the hidden column's index
-  if(valCookie){
-    valCookie = valCookie.split("/");
-    var found = false;
-    for( i=0; i<valCookie.length; i++ ){
-        if (show == valCookie[i]) {
-          valCookie.remove(i);
-          found = true;
+function showColumn(num) {
+    $("#hideall").prop("checked", false).parent().removeClass("selected");
+    $("#" + num).parent().addClass("selected");
+    var valCookie = $.cookie("showColumns");
+    // set the index of the table column to hide
+    var show = Number(num.replace("checkheader", "")) + 3;
+    // hide header and cells matching the index
+    $("#itemst td:nth-child(" + show + "),#itemst th:nth-child(" + show + ")").toggle();
+    // set or modify cookie with the hidden column's index
+    if (valCookie) {
+        valCookie = valCookie.split("/");
+        var found = false;
+        for ( var i = 0; i < valCookie.length; i++ ) {
+            if (show == valCookie[i]) {
+                valCookie.remove(i);
+                found = true;
+            }
+        }
+        if (found) {
+            var cookieString = valCookie.join("/");
+            $.cookie("showColumns", cookieString, { expires: date, path: '/' });
         }
     }
-    if( found ){
-        var cookieString = valCookie.join("/");
-        $.cookie("showColumns", cookieString, { expires : date, path: '/' });
-    }
-  }
 }
-function showAllColumns(){
-    $("#selections input:checkbox").each(function(){
+
+function showAllColumns() {
+    $("#selections input:checkbox").each(function () {
         $(this).prop("checked", true);
     });
     $("#selections span").addClass("selected");
@@ -88,59 +88,60 @@ function showAllColumns(){
     $.removeCookie("showColumns", { path: '/' });
     $("#hideall").prop("checked", false).parent().removeClass("selected");
 }
-function hideAllColumns(){
-    $("#selections input:checkbox").each(function(){
+
+function hideAllColumns() {
+    $("#selections input:checkbox").each(function () {
         $(this).prop("checked", false);
     });
     $("#selections span").removeClass("selected");
     $("#itemst td:nth-child(3),#itemst th:nth-child(3)").nextAll().hide();
     $("#hideall").prop("checked", true).parent().addClass("selected");
     var cookieString = allColumns.join("/");
-    $.cookie("showColumns", cookieString, { expires : date, path: '/' });
+    $.cookie("showColumns", cookieString, { expires: date, path: '/' });
 }
 
-  $(document).ready(function() {
+$(document).ready(function () {
     hideColumns();
     $("#itemst").dataTable($.extend(true, {}, dataTablesDefaults, {
         "sDom": 't',
         "aoColumnDefs": [
-            { "aTargets": [ 0 ], "bSortable": false, "bSearchable": false },
-            { "sType": "anti-the", "aTargets" : [ "anti-the" ] }
+            { "aTargets": [0], "bSortable": false, "bSearchable": false },
+            { "sType": "anti-the", "aTargets": ["anti-the"] }
         ],
         "bPaginate": false,
     }));
-    $("#selectallbutton").click(function(e){
+    $("#selectallbutton").click(function (e) {
         e.preventDefault();
-        $("#itemst input:checkbox").each(function(){
+        $("#itemst input:checkbox").each(function () {
             $(this).prop("checked", true);
         });
     });
-    $("#clearallbutton").click(function(e){
+    $("#clearallbutton").click(function (e) {
         e.preventDefault();
-        $("#itemst input:checkbox").each(function(){
+        $("#itemst input:checkbox").each(function () {
             $(this).prop("checked", false);
         });
     });
-    $("#clearonloanbutton").click(function(){
-      $("#itemst input[name='itemnumber'][data-is-onloan='1']").each(function(){
-        $(this).prop('checked', false);
-      });
-      return false;
+    $("#clearonloanbutton").click(function () {
+        $("#itemst input[name='itemnumber'][data-is-onloan='1']").each(function () {
+            $(this).prop('checked', false);
+        });
+        return false;
     });
-    $("#selections input").change(function(e){
-      var num = $(this).attr("id");
-      if(num == 'showall'){
-        showAllColumns();
-        e.stopPropagation();
-      } else if(num == 'hideall'){
-        hideAllColumns();
-        e.stopPropagation();
-      } else {
-        if($(this).prop("checked")){
-          showColumn(num);
+    $("#selections input").change(function (e) {
+        var num = $(this).attr("id");
+        if (num == 'showall') {
+            showAllColumns();
+            e.stopPropagation();
+        } else if (num == 'hideall') {
+            hideAllColumns();
+            e.stopPropagation();
         } else {
-          hideColumn(num);
+            if ($(this).prop("checked")) {
+                showColumn(num);
+            } else {
+                hideColumn(num);
+            }
         }
-      }
     });
-  });
+});