diff --git a/form.js b/form.js
index 1ad7848..8c53545 100644
--- a/form.js
+++ b/form.js
@@ -1,12 +1,20 @@
-addAutoresize = function() {
-  document.querySelectorAll('[data-autoresize]').forEach(function(element) {
-    element.style.boxSizing = 'border-box';
-    var offset = element.offsetHeight - element.clientHeight;
-    document.addEventListener('input', function(event) {
-      event.target.style.height = 'auto';
-      event.target.style.height = event.target.scrollHeight + offset + 'px';
-    });
-    element.removeAttribute('data-autoresize');
-  });
-}
-addAutoresize();
\ No newline at end of file
+addAutoresize = function() {
+  document.querySelectorAll('[data-autoresize]').forEach(function(element) {
+    element.style.boxSizing = 'border-box';
+    var offset = element.offsetHeight - element.clientHeight;
+    document.addEventListener('input', function(event) {
+      event.target.style.height = 'auto';
+      event.target.style.height = event.target.scrollHeight + offset + 'px';
+    });
+    element.removeAttribute('data-autoresize');
+  });
+}
+addAutoresize();
+
+isset = function(id) {
+  if($('#'+id).val() == ''){
+    alert('Es wurden nicht alle Felder ausgefüllt.');
+    return false;
+  }
+  return true;
+}
\ No newline at end of file