diff --git a/WebCms/Models/LeafDataQuery.cs b/WebCms/Models/LeafDataQuery.cs
index e5e4f89..ad5c7e8 100644
--- a/WebCms/Models/LeafDataQuery.cs
+++ b/WebCms/Models/LeafDataQuery.cs
@@ -57,10 +57,10 @@ namespace LeafWeb.WebCms.Models
         public string phips2 { get; set; }
 
         [Display(Name = "Show Only Successfully Completed")]
-        public bool compl { get; set; }
+        public bool? compl { get; set; }
 
         [Display(Name = "Only my data")]
-        public bool usr { get; set; }
+        public bool? usr { get; set; }
 
         public bool HasExtendedParameters =>
             !(
@@ -74,12 +74,12 @@ namespace LeafWeb.WebCms.Models
                 && string.IsNullOrEmpty(pari)
                 && string.IsNullOrEmpty(tleaf)
                 && string.IsNullOrEmpty(phips2)
-                && !compl
+                && !(compl.HasValue && compl.Value)
             );
 
         public bool HasParameters =>
             HasExtendedParameters 
             || !string.IsNullOrEmpty(q) 
-            || usr;
+            || usr.HasValue && usr.Value;
     }
 }
\ No newline at end of file
diff --git a/WebCms/Utility/QueryFilter.cs b/WebCms/Utility/QueryFilter.cs
index 0a19bdc..925c227 100644
--- a/WebCms/Utility/QueryFilter.cs
+++ b/WebCms/Utility/QueryFilter.cs
@@ -143,7 +143,7 @@ namespace LeafWeb.WebCms.Utility
                     select li;
             }
 
-            if (query.compl)
+            if (query.compl.HasValue && query.compl.Value)
             {
                 resultItems =
                     from li in resultItems
@@ -154,7 +154,7 @@ namespace LeafWeb.WebCms.Utility
                     select li;
             }
 
-            if (query.usr && !string.IsNullOrEmpty(currentUserEmail))
+            if (query.usr.HasValue && query.usr.Value && !string.IsNullOrEmpty(currentUserEmail))
             {
                 resultItems =
                     from li in resultItems
diff --git a/WebCms/Views/Shared/_LeafDataQuery.cshtml b/WebCms/Views/Shared/_LeafDataQuery.cshtml
index 50601dd..2618078 100644
--- a/WebCms/Views/Shared/_LeafDataQuery.cshtml
+++ b/WebCms/Views/Shared/_LeafDataQuery.cshtml
@@ -1,12 +1,12 @@
 @using System.Web.Mvc.Html
 @using ClientDependency.Core.Mvc
-@using LeafWeb.WebCms.Utility
 @model LeafDataQuery
 @{
     Html.RequiresJs("~/scripts/jquery.validate.min.js", 2);
     Html.RequiresJs("~/scripts/jquery.validate.unobtrusive.min.js", 2);
     Html.RequiresJs("~/scripts/jquery.validate.custom.js", 2);
     Html.RequiresJs("~/scripts/jquery.validate.unobtrusive.bootstrap.js", 2);
+    Html.RequiresJs("~/scripts/LeafDataQuery.js", 3);
 
     var actionName = string.Empty;
     var controllerName = string.Empty;
@@ -25,7 +25,7 @@
         htmlFormAction = (string)ViewData["htmlFormAction"];
     }
 }
-@using (Html.BeginUmbracoForm(actionName, controllerName, null, new { action = htmlFormAction }))
+@using (Html.BeginUmbracoForm(actionName, controllerName, null, new { action = htmlFormAction, id = "leafdataquery" }))
 {
     <div class="row justify-content-end">
         <div class="col text-right pt-2">
diff --git a/WebCms/WebCms.csproj b/WebCms/WebCms.csproj
index bec3644..ef6e3ca 100644
--- a/WebCms/WebCms.csproj
+++ b/WebCms/WebCms.csproj
@@ -1130,6 +1130,7 @@
     <Compile Include="Models\QueueViewModel.cs" />
     <Compile Include="Models\SelectListViewModel.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Content Include="scripts\LeafDataQuery.js" />
     <Compile Include="Services\UrlService.cs" />
     <Compile Include="Services\EmailNotificationService.cs" />
     <Compile Include="Services\LeafGasCharter.cs" />
diff --git a/WebCms/scripts/LeafDataQuery.js b/WebCms/scripts/LeafDataQuery.js
new file mode 100644
index 0000000..20f18a9
--- /dev/null
+++ b/WebCms/scripts/LeafDataQuery.js
@@ -0,0 +1,11 @@
+$(function() {
+    $("form#leafdataquery .latr input.form-control")
+        .rules("add",
+            {
+                //required: true
+                required: function ()
+                {
+                    return !!$(".lat input.form-control").val();
+                }
+            });
+});
\ No newline at end of file
diff --git a/WebCms/scripts/site.js b/WebCms/scripts/site.js
index 740b333..20a18f2 100644
--- a/WebCms/scripts/site.js
+++ b/WebCms/scripts/site.js
@@ -28,7 +28,8 @@
 		return false;
     });
 
-    $("form:not(.confirm)").submit(function() {
+    $("form:not(.confirm)").submit(function () {
+        if (!$(this).valid()) return;
         var btn = $(this).find(":submit");
         btn.prop("disabled", true);
         btn.html(