diff --git a/srv/static/js/buildactionspage.js b/srv/static/js/buildactionspage.js
index 6dd395a..cc01797 100644
--- a/srv/static/js/buildactionspage.js
+++ b/srv/static/js/buildactionspage.js
@@ -32,9 +32,10 @@ export function initBuildActionsForm()
     return true;
 }
 
-function queryBuildActions()
+function queryBuildActions(additionalParams)
 {
-    AjaxHelper.queryRoute('GET', '/build-action', showBuildActions, 'build-action');
+    additionalParams = additionalParams === undefined ? '' : '?' + additionalParams;
+    AjaxHelper.queryRoute('GET', '/build-action' + additionalParams, showBuildActions, 'build-action');
     return true;
 }
 
diff --git a/srv/static/js/customrendering.js b/srv/static/js/customrendering.js
index 9a86e66..c2c191d 100644
--- a/srv/static/js/customrendering.js
+++ b/srv/static/js/customrendering.js
@@ -37,7 +37,13 @@ export function renderReloadButton(handler)
     const reloadButton = document.createElement('button');
     reloadButton.className = 'icon-button icon-reload';
     reloadButton.type = 'button';
-    reloadButton.onclick = handler;
+    reloadButton.onclick = function () { handler() };
+    reloadButton.oncontextmenu = function () { return false };
+    reloadButton.onmouseup = function (e) {
+        if (e.which === 3 || e.button === 2) { // right click
+            handler(window.prompt('Enter additional query parameters:'));
+        }
+    }
     reloadButton.appendChild(document.createTextNode('Reload'));
     return reloadButton;
 }
diff --git a/srv/static/js/globalstatuspage.js b/srv/static/js/globalstatuspage.js
index ec07cae..3e41042 100644
--- a/srv/static/js/globalstatuspage.js
+++ b/srv/static/js/globalstatuspage.js
@@ -6,9 +6,10 @@ import * as Utils from './utils.js';
 
 const status = {repoNames: undefined};
 
-export function queryGlobalStatus()
+export function queryGlobalStatus(additionalParams)
 {
-    AjaxHelper.queryRoute('GET', '/status', handleGlobalStatusUpdate, 'global');
+    additionalParams = additionalParams === undefined ? '' : '?' + additionalParams;
+    AjaxHelper.queryRoute('GET', '/status' + additionalParams, handleGlobalStatusUpdate, 'global');
     return true;
 }