diff --git a/apps/calendar/ajax/calendar/edit.form.php b/apps/calendar/ajax/calendar/edit.form.php
index 7736680931..036ed12bb7 100644
--- a/apps/calendar/ajax/calendar/edit.form.php
+++ b/apps/calendar/ajax/calendar/edit.form.php
@@ -11,7 +11,7 @@ OCP\JSON::checkLoggedIn();
 OCP\JSON::checkAppEnabled('calendar');
 
 $calendarcolor_options = OC_Calendar_Calendar::getCalendarColorOptions();
-$calendar = OC_Calendar_App::getCalendar($_GET['calendarid']);
+$calendar = OC_Calendar_App::getCalendar($_POST['calendarid']);
 $tmpl = new OCP\Template("calendar", "part.editcalendar");
 $tmpl->assign('new', false);
 $tmpl->assign('calendarcolor_options', $calendarcolor_options);
diff --git a/apps/calendar/ajax/changeview.php b/apps/calendar/ajax/changeview.php
index 2c2d09ccb1..0099fd5ec2 100644
--- a/apps/calendar/ajax/changeview.php
+++ b/apps/calendar/ajax/changeview.php
@@ -7,7 +7,7 @@
  */
 OCP\JSON::checkLoggedIn();
 OCP\JSON::checkAppEnabled('calendar');
-$view = $_GET['v'];
+$view = $_POST['v'];
 switch($view){
 	case 'agendaWeek':
 	case 'month';
diff --git a/apps/calendar/ajax/event/edit.form.php b/apps/calendar/ajax/event/edit.form.php
index f2ea84dd20..dbb78edb79 100644
--- a/apps/calendar/ajax/event/edit.form.php
+++ b/apps/calendar/ajax/event/edit.form.php
@@ -13,7 +13,7 @@ if(!OCP\User::isLoggedIn()) {
 }
 OCP\JSON::checkAppEnabled('calendar');
 
-$id = $_GET['id'];
+$id = $_POST['id'];
 $data = OC_Calendar_App::getEventObject($id, true, true);
 
 if(!$data){
diff --git a/apps/calendar/ajax/import/import.php b/apps/calendar/ajax/import/import.php
index a3eaed844a..6fdad12c08 100644
--- a/apps/calendar/ajax/import/import.php
+++ b/apps/calendar/ajax/import/import.php
@@ -16,9 +16,9 @@ $nl="\r\n";
 $comps = array('VEVENT'=>true, 'VTODO'=>true, 'VJOURNAL'=>true);
 
 global $progresskey;
-$progresskey = 'calendar.import-' . $_GET['progresskey'];
+$progresskey = 'calendar.import-' . $_POST['progresskey'];
 
-if (isset($_GET['progress']) && $_GET['progress']) {
+if (isset($_POST['progress']) && $_POST['progress']) {
 	echo OC_Cache::get($progresskey);
 	die;
 }
diff --git a/apps/calendar/ajax/settings/guesstimezone.php b/apps/calendar/ajax/settings/guesstimezone.php
index 13092777b7..f36f3bf061 100644
--- a/apps/calendar/ajax/settings/guesstimezone.php
+++ b/apps/calendar/ajax/settings/guesstimezone.php
@@ -12,8 +12,8 @@ OCP\JSON::checkAppEnabled('calendar');
 
 $l = OC_L10N::get('calendar');
 
-$lat = $_GET['lat'];
-$lng = $_GET['long'];
+$lat = $_POST['lat'];
+$lng = $_POST['lng'];
 
 $timezone =  OC_Geo::timezone($lat, $lng);
 
diff --git a/apps/calendar/ajax/share/activation.php b/apps/calendar/ajax/share/activation.php
index 7d6b8fcb16..bce8693577 100644
--- a/apps/calendar/ajax/share/activation.php
+++ b/apps/calendar/ajax/share/activation.php
@@ -5,7 +5,7 @@
  * later.
  * See the COPYING-README file.
  */
-$id = strip_tags($_GET['id']);
-$activation = strip_tags($_GET['activation']);
+$id = strip_tags($_POST['id']);
+$activation = strip_tags($_POST['activation']);
 OC_Calendar_Share::set_active(OCP\USER::getUser(), $id, $activation);
 OCP\JSON::success();
diff --git a/apps/calendar/ajax/share/changepermission.php b/apps/calendar/ajax/share/changepermission.php
index 2737420c94..e807c164a2 100644
--- a/apps/calendar/ajax/share/changepermission.php
+++ b/apps/calendar/ajax/share/changepermission.php
@@ -6,9 +6,9 @@
  * See the COPYING-README file.
  */
  
-$id = strip_tags($_GET['id']);
-$idtype = strip_tags($_GET['idtype']);
-$permission = (int) strip_tags($_GET['permission']);
+$id = strip_tags($_POST['id']);
+$idtype = strip_tags($_POST['idtype']);
+$permission = (int) strip_tags($_POST['permission']);
 switch($idtype){
 	case 'calendar':
 	case 'event':
@@ -25,8 +25,8 @@ if($idtype == 'event' && !OC_Calendar_App::getEventObject($id)){
 	OCP\JSON::error(array('message'=>'permission denied'));
 	exit;
 }
-$sharewith = $_GET['sharewith'];
-$sharetype = strip_tags($_GET['sharetype']);
+$sharewith = $_POST['sharewith'];
+$sharetype = strip_tags($_POST['sharetype']);
 switch($sharetype){
 	case 'user':
 	case 'group':
diff --git a/apps/calendar/ajax/share/dropdown.php b/apps/calendar/ajax/share/dropdown.php
index a3b0faca4b..86cf4ac090 100644
--- a/apps/calendar/ajax/share/dropdown.php
+++ b/apps/calendar/ajax/share/dropdown.php
@@ -7,7 +7,7 @@
  */
  
 $user = OCP\USER::getUser();
-$calid = $_GET['calid'];
+$calid = $_POST['calid'];
 $calendar = OC_Calendar_Calendar::find($calid);
 if($calendar['userid'] != $user){
 	OCP\JSON::error();
diff --git a/apps/calendar/ajax/share/share.php b/apps/calendar/ajax/share/share.php
index 629a7b6b79..838db619f6 100644
--- a/apps/calendar/ajax/share/share.php
+++ b/apps/calendar/ajax/share/share.php
@@ -6,8 +6,8 @@
  * See the COPYING-README file.
  */
  
-$id = strip_tags($_GET['id']);
-$idtype = strip_tags($_GET['idtype']);
+$id = strip_tags($_POST['id']);
+$idtype = strip_tags($_POST['idtype']);
 switch($idtype){
 	case 'calendar':
 	case 'event':
@@ -24,8 +24,8 @@ if($idtype == 'event' && !OC_Calendar_App::getEventObject($id)){
 	OCP\JSON::error(array('message'=>'permission denied'));
 	exit;
 }
-$sharewith = $_GET['sharewith'];
-$sharetype = strip_tags($_GET['sharetype']);
+$sharewith = $_POST['sharewith'];
+$sharetype = strip_tags($_POST['sharetype']);
 switch($sharetype){
 	case 'user':
 	case 'group':
diff --git a/apps/calendar/ajax/share/unshare.php b/apps/calendar/ajax/share/unshare.php
index fe7c98452d..1ce04677fb 100644
--- a/apps/calendar/ajax/share/unshare.php
+++ b/apps/calendar/ajax/share/unshare.php
@@ -6,8 +6,8 @@
  * See the COPYING-README file.
  */
  
-$id = strip_tags($_GET['id']);
-$idtype = strip_tags($_GET['idtype']);
+$id = strip_tags($_POST['id']);
+$idtype = strip_tags($_POST['idtype']);
 switch($idtype){
 	case 'calendar':
 	case 'event':
@@ -24,8 +24,8 @@ if($idtype == 'event' && !OC_Calendar_App::getEventObject($id)){
 	OCP\JSON::error(array('message'=>'permission denied'));
 	exit;
 }
-$sharewith = $_GET['sharewith'];
-$sharetype = strip_tags($_GET['sharetype']);
+$sharewith = $_POST['sharewith'];
+$sharetype = strip_tags($_POST['sharetype']);
 switch($sharetype){
 	case 'user':
 	case 'group':
diff --git a/apps/calendar/js/calendar.js b/apps/calendar/js/calendar.js
index b5411d3fd9..f869fcf2ad 100644
--- a/apps/calendar/js/calendar.js
+++ b/apps/calendar/js/calendar.js
@@ -77,7 +77,7 @@ Calendar={
 				$('#event').dialog('destroy').remove();
 			}else{
 				Calendar.UI.loading(true);
-				$('#dialog_holder').load(OC.filePath('calendar', 'ajax/event', 'edit.form.php') + '?id=' + id, Calendar.UI.startEventDialog);
+				$('#dialog_holder').load(OC.filePath('calendar', 'ajax/event', 'edit.form.php'), {id: id}, Calendar.UI.startEventDialog);
 			}
 		},
 		submitDeleteEventForm:function(url){
@@ -413,7 +413,7 @@ Calendar={
 			},
 			edit:function(object, calendarid){
 				var tr = $(document.createElement('tr'))
-					.load(OC.filePath('calendar', 'ajax/calendar', 'edit.form.php') + "?calendarid="+calendarid,
+					.load(OC.filePath('calendar', 'ajax/calendar', 'edit.form.php'), {calendarid: calendarid},
 						function(){Calendar.UI.Calendar.colorPicker(this)});
 				$(object).closest('tr').after(tr).hide();
 			},
@@ -502,14 +502,14 @@ Calendar={
 			currentid: 'false',
 			idtype: '',
 			activation:function(object,owner,id){
-				$.getJSON(OC.filePath('calendar', 'ajax/share', 'activation.php'),{id:id, idtype:'calendar', activation:object.checked?1:0});
+				$.post(OC.filePath('calendar', 'ajax/share', 'activation.php'),{id:id, idtype:'calendar', activation:object.checked?1:0});
 				$('#calendar_holder').fullCalendar('refetchEvents');
 			},
 			dropdown:function(userid, calid){
 				$('.calendar_share_dropdown').remove();
 				var element = document.getElementById(userid+'_'+calid);
 				$('<div class="calendar_share_dropdown"></div>').appendTo(element);
-				$.get(OC.filePath('calendar', 'ajax/share', 'dropdown.php') + '?calid=' + calid, function(data){
+				$.post(OC.filePath('calendar', 'ajax/share', 'dropdown.php'), {calid: calid}, function(data){
 					$('.calendar_share_dropdown').html(data);
 					$('.calendar_share_dropdown').show('blind');
 					$('#share_user').chosen();
@@ -519,7 +519,7 @@ Calendar={
 				Calendar.UI.Share.idtype = 'calendar';
 			},
 			share:function(id, idtype, sharewith, sharetype){
-				$.getJSON(OC.filePath('calendar', 'ajax/share', 'share.php'),{id:id, idtype:idtype, sharewith:sharewith, sharetype:sharetype}, function(data){
+				$.post(OC.filePath('calendar', 'ajax/share', 'share.php'),{id:id, idtype:idtype, sharewith:sharewith, sharetype:sharetype}, function(data){
 					if(sharetype == 'public'){
 						$('#public_token').val(parent.location.protocol+'//'+location.host+OC.linkTo('', 'public.php')+'?service=calendar&t='+data.message);
 						$('#public_token').css('display', 'block');
@@ -527,7 +527,7 @@ Calendar={
 				});
 			},
 			unshare:function(id, idtype, sharewith, sharetype){
-				$.getJSON(OC.filePath('calendar', 'ajax/share', 'unshare.php'),{id:id, idtype:idtype, sharewith:sharewith, sharetype:sharetype}, function(){
+				$.post(OC.filePath('calendar', 'ajax/share', 'unshare.php'),{id:id, idtype:idtype, sharewith:sharewith, sharetype:sharetype}, function(){
 					if(sharetype == 'public'){
 						$('#public_token').val('');
 						$('#public_token').css('display', 'none');
@@ -535,7 +535,7 @@ Calendar={
 				});
 			},
 			changepermission:function(id, idtype, sharewith, sharetype, permission){
-				$.getJSON(OC.filePath('calendar', 'ajax/share', 'changepermission.php'),{id:id, idtype:idtype, sharewith: sharewith, sharetype:sharetype, permission: (permission?1:0)});
+				$.post(OC.filePath('calendar', 'ajax/share', 'changepermission.php'),{id:id, idtype:idtype, sharewith: sharewith, sharetype:sharetype, permission: (permission?1:0)});
 			},
 			init:function(){
 				$('.calendar_share_dropdown').live('mouseleave', function(){
@@ -846,7 +846,7 @@ $(document).ready(function(){
 		viewDisplay: function(view) {
 			$('#datecontrol_date').html(view.title);
 			if (view.name != defaultView) {
-				$.get(OC.filePath('calendar', 'ajax', 'changeview.php') + "?v="+view.name);
+				$.post(OC.filePath('calendar', 'ajax', 'changeview.php'), {v:view.name});
 				defaultView = view.name;
 			}
 			Calendar.UI.setViewActive(view.name);
diff --git a/apps/calendar/js/geo.js b/apps/calendar/js/geo.js
index 092d854746..99290d940e 100644
--- a/apps/calendar/js/geo.js
+++ b/apps/calendar/js/geo.js
@@ -6,7 +6,7 @@
  */
 if (navigator.geolocation) { 
 	navigator.geolocation.getCurrentPosition(function(position) {
-		$.getJSON(OC.filePath('calendar', 'ajax/settings', 'guesstimezone.php') + '?lat=' + position.coords.latitude + '&long=' + position.coords.longitude,
+		$.post(OC.filePath('calendar', 'ajax/settings', 'guesstimezone.php'), {lat: position.coords.latitude, lng: position.coords.longitude},
 		function(data){
 			if (data.status == 'success' && typeof(data.message) != 'undefined'){
 				$('#notification').html(data.message);
diff --git a/apps/calendar/js/loader.js b/apps/calendar/js/loader.js
index 838521ec7f..0fc5018e89 100644
--- a/apps/calendar/js/loader.js
+++ b/apps/calendar/js/loader.js
@@ -63,7 +63,7 @@ Calendar_Import={
 		});
 	},
 	getimportstatus: function(progresskey){
-		$.get(OC.filePath('calendar', 'ajax/import', 'import.php') + '?progress=1&progresskey=' + progresskey, function(percent){
+		$.post(OC.filePath('calendar', 'ajax/import', 'import.php'), {progress:1,progresskey: progresskey}, function(percent){
 			$('#progressbar').progressbar('option', 'value', parseInt(percent));
 			if(percent < 100){
 				window.setTimeout('Calendar_Import.getimportstatus(\'' + progresskey + '\')', 500);