diff --git a/lib/picker.date.js b/lib/picker.date.js
index b34e8739..dbf83237 100644
--- a/lib/picker.date.js
+++ b/lib/picker.date.js
@@ -250,11 +250,34 @@ DatePicker.prototype.create = function( type, value, options ) {
 } //DatePicker.prototype.create
 
 
+// bluppfisk: This function calculates a number of working days (days) from a given date (dateUnit)
+
+function addWorkingDays(dateUnit, days) {
+    days = parseInt(days);
+    var wks = Math.floor(days/5);
+    // var dys = days.mod(5);
+    var dys = ((days%5)+5)%5;
+    var dy = dateUnit.getDay();
+    var newDate = new Date();
+
+    if (dy === 6 && dys > -1) {
+       if (dys === 0) {dys-=2; dy+=2;}
+       dys++; dy -= 6;}
+    if (dy === 0 && dys < 1) {
+       if (dys === 0) {dys+=2; dy-=2;}
+       dys--; dy += 6;}
+    if (dy + dys > 5) dys += 2;
+    if (dy + dys < 1) dys -= 2;
+    newDate.setDate(dateUnit.getDate()+wks*7+dys);
+    return newDate;
+}
+
 /**
  * Create a range limit object using an array, date object,
  * literal “true”, or integer relative to another time.
+ * bluppfisk: added the boolean toWorkingDays parameter
  */
-DatePicker.prototype.createRange = function( from, to ) {
+DatePicker.prototype.createRange = function( from, to, toWorkingDays ) {
 
     var calendar = this,
         createDate = function( date ) {
@@ -277,7 +300,11 @@ DatePicker.prototype.createRange = function( from, to ) {
         from = [ to.year, to.month, to.date + from ];
     }
     else if ( _.isInteger( to ) && $.isPlainObject( from ) ) {
-        to = [ from.year, from.month, from.date + to ];
+        if (toWorkingDays) { // bluppfisk: add working days instead of normal days (i.e. exclude Saturday and Sunday)
+            to = addWorkingDays(createDate( [from.year, from.month, from.date ] ).obj, to);
+        } else {
+            to = [ from.year, from.month, from.date + to ];
+        }
     }
 
     return {
@@ -286,15 +313,26 @@ DatePicker.prototype.createRange = function( from, to ) {
     }
 } //DatePicker.prototype.createRange
 
-
 /**
  * Check if a date unit falls within a date range object.
  */
 DatePicker.prototype.withinRange = function( range, dateUnit ) {
-    range = this.createRange(range.from, range.to)
+    workingDays = range.toWorkingDays || null; // bluppfisk: count working days instead of normal days if this is set
+    range = this.createRange(range.from, range.to, workingDays);
     return dateUnit.pick >= range.from.pick && dateUnit.pick <= range.to.pick
 }
 
+/**
+ * Bluppfisk: Check if a date falls within an even or odd week's disabled range.
+ */
+ DatePicker.prototype.inEvenOddWeeks = function ( evenOddWeek, dateUnit, firstDay ) {
+    oddWeeks = evenOddWeek.oddWeeks;
+    evenWeeks = evenOddWeek.evenWeeks;
+    day = new Date(dateUnit.pick);
+    weekday = (day.getDay() + (firstDay ? 0 : 1)) || 7; //getDay is safer than mod 7, apparently
+    return ( jQuery.inArray( weekday, ((getWeekNumber(day, firstDay) % 2 === 0) ? evenWeeks : oddWeeks )) != -1);
+ }
+
 
 /**
  * Check if two date range objects overlap.
@@ -546,7 +584,20 @@ DatePicker.prototype.validate = function( type, dateObject, options ) {
     return dateObject
 } //DatePicker.prototype.validate
 
-
+// bluppfisk: get week number function
+function getWeekNumber(d, firstDay) {
+    // Copy date so don't modify original
+    d = new Date(+d);
+    d.setHours(0,0,0);
+    // Set to nearest Thursday: current date + 4 - current day number (depending on the firstDay setting)
+    d.setDate(d.getDate() + (firstDay ? 4 : 3) - (firstDay ? (d.getDay()||7) : (d.getDay())));
+    // Get first day of year
+    var yearStart = new Date(d.getFullYear(),0,1);
+    // Calculate full weeks to nearest Thursday
+    var weekNo = Math.ceil(( ( (d - yearStart) / 86400000) + 1)/7);
+    // Return week number
+    return weekNo;
+}
 /**
  * Check if a date is disabled.
  */
@@ -570,7 +621,15 @@ DatePicker.prototype.disabled = function( dateToVerify ) {
 
             // If it’s an object, match a date within the “from” and “to” range.
             if ( $.isPlainObject( dateToDisable ) ) {
-                return calendar.withinRange( dateToDisable, dateToVerify )
+
+                // bluppfisk: verify whether it's a to-from range or an odd/even week weekday group
+                if ( 'to' in dateToDisable || 'from' in dateToDisable ) {
+                    return calendar.withinRange( dateToDisable, dateToVerify )
+                }
+                if ( 'oddWeeks' in dateToDisable || 'evenWeeks' in dateToDisable ) {
+                    return calendar.inEvenOddWeeks( dateToDisable, dateToVerify, calendar.settings.firstDay );
+                }
+                
             }
         })
 
diff --git a/lib/translations/nl_NL.js b/lib/translations/nl_NL.js
index 166c5497..cdd1e1a4 100644
--- a/lib/translations/nl_NL.js
+++ b/lib/translations/nl_NL.js
@@ -5,6 +5,10 @@ jQuery.extend( jQuery.fn.pickadate.defaults, {
     monthsShort: [ 'jan', 'feb', 'maa', 'apr', 'mei', 'jun', 'jul', 'aug', 'sep', 'okt', 'nov', 'dec' ],
     weekdaysFull: [ 'zondag', 'maandag', 'dinsdag', 'woensdag', 'donderdag', 'vrijdag', 'zaterdag' ],
     weekdaysShort: [ 'zo', 'ma', 'di', 'wo', 'do', 'vr', 'za' ],
+    labelMonthNext: 'Volgende maand',
+    labelMonthPrev: 'Vorige maand',
+    labelMonthSelect: 'Kies de maand',
+    labelYearSelect: 'Kies het jaar',
     today: 'vandaag',
     clear: 'verwijderen',
     close: 'sluiten',
@@ -15,4 +19,4 @@ jQuery.extend( jQuery.fn.pickadate.defaults, {
 
 jQuery.extend( jQuery.fn.pickatime.defaults, {
     clear: 'verwijderen'
-});
+});
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