minor patch

js/dashboard.js

@@ -13,7 +13,11 @@ class BlueWeatherDashboard {
     this.params = {
       loc: 1,
       page: -1,
-      maxVals: 100
+      maxVals: 100,
+      range: {
+        from: "",
+        to: ""
+      }
     }
 
     this.restoreParms(this.params)
@@ -188,7 +192,8 @@ class BlueWeatherDashboard {
         mainContent.appendChild(tableContainer)
       }
       else if (page !== -1) {
-        dashboard.loadDiagram("mainContent", locationData, page)
+        mainContent.innerHTML = ""
+        dashboard.loadDiagram(mainContent, locationData, page)
       }
 
       loader.style = "position: absolute; left: 50%; opacity: 0;"
@@ -243,7 +248,13 @@ class BlueWeatherDashboard {
   }
 
   loadDiagram(parentId, locationData, sensorId) {
-    mainContent = document.getElementById(parentId)
+    if(typeof(parentId) === "string"){
+      mainContent = document.getElementById(parentId)
+    }
+    else {
+      mainContent = parentId
+    }
+    
     // get all relevant  meassurement values
     var vals = []