diff --git a/fhem/FHEM/01_FHEMWEB.pm b/fhem/FHEM/01_FHEMWEB.pm
index 0be7eaa3a..85bb450d0 100755
--- a/fhem/FHEM/01_FHEMWEB.pm
+++ b/fhem/FHEM/01_FHEMWEB.pm
@@ -709,7 +709,7 @@ FW_digestCgi($)
     if($p eq "room")         { $FW_room = $v; }
     if($p eq "cmd")          { $cmd = $v; }
     if($p =~ m/^arg\.(.*)$/) { $arg{$1} = $v; }
-    if($p =~ m/^val\.(.*)$/) { $val{$1} = $v; }
+    if($p =~ m/^val\.(.*)$/) { $val{$1} = ($val{$1} ? $val{$1}.",$v" : $v) }
     if($p =~ m/^dev\.(.*)$/) { $dev{$1} = $v; }
     if($p =~ m/^cmd\.(.*)$/) { $cmd = $v; $c = $1; }
     if($p eq "pos")          { %FW_pos =  split(/[=;]/, $v); }
@@ -914,7 +914,7 @@ FW_doDetail($)
   FW_makeTable("Readings", $d, $h->{READINGS});
 
   my $attrList = getAllAttr($d);
-  my $roomList = join(",", sort grep !/ /, keys %FW_rooms);
+  my $roomList = "multiple,".join(",", sort grep !/ /, keys %FW_rooms);
   $attrList =~ s/room /room:$roomList /;
   FW_makeSelect($d, "attr", $attrList,"attr");
 
@@ -2848,8 +2848,10 @@ FW_ActivateInform()
             displayed.</li>
           <li>if the modifier is ":textField", an input field is displayed.</li>
           <li>if the modifier is of the form
-          ":slider,&lt;min&gt;,&lt;step&gt;,&lt;max&gt;", then a javascript
-          driven slider is displayed</li>
+            ":slider,&lt;min&gt;,&lt;step&gt;,&lt;max&gt;", then a javascript
+            driven slider is displayed</li>
+          <li>if the modifier is of the form ":multiple,val1,val2,...", then
+            multiple values can be selected, the result is comma separated.
           <li>else a dropdown with all the modifier values is displayed</li>
         </ul>
         If the command is state, then the value will be used as a command.<br>
@@ -3329,6 +3331,9 @@ FW_ActivateInform()
             ":slider,&lt;min&gt;,&lt;step&gt;,&lt;max&gt;", so wird ein in
             JavaScript programmierter Slider angezeigt</li>
 
+          <li>Ist der Modifier ":multiple,val1,val2,...", dann ein
+            Mehrfachauswahl ist m&ouml;glich, das Ergebnis ist Komma-separiert.
+
           <li>In allen anderen F&auml;llen erscheint ein Dropdown mit allen
             Modifier Werten.</li>
         </ul>
diff --git a/fhem/www/pgm2/fhemweb_multiple.js b/fhem/www/pgm2/fhemweb_multiple.js
new file mode 100644
index 000000000..3806558eb
--- /dev/null
+++ b/fhem/www/pgm2/fhemweb_multiple.js
@@ -0,0 +1,36 @@
+function
+FW_multipleSelChange(name, devName, vArr)
+{
+  if(vArr.length < 2 || vArr[0] != "multiple")
+    return undefined;
+
+  var o = new Object();
+  o.newEl = document.createElement('select');
+  o.newEl.setAttribute('multiple', true);
+  for(var j=1; j < vArr.length; j++) {
+    o.newEl.options[j-1] = new Option(vArr[j], vArr[j]);
+  }
+  o.qFn = 'FW_multipleSetSelected(qArg, "%")';
+  o.qArg = o.newEl;
+  return o;
+}
+
+function
+FW_multipleSetSelected(el, val)
+{
+  if(typeof el == 'string')
+    el = document.getElementById(el);
+
+    var l = val.split(",");
+    for(var j=0;j<el.options.length;j++)
+      for(var i=0;i<l.length;i++)
+        if(el.options[j].value == l[i])
+           el.options[j].selected = true;
+         
+    if(el.onchange)
+      el.onchange();
+}
+
+FW_widgets['multiple'] = {
+  selChange:FW_multipleSelChange
+};
diff --git a/fhem/www/pgm2/fhemweb_textField.js b/fhem/www/pgm2/fhemweb_textField.js
index 997eb11af..291d2f25b 100644
--- a/fhem/www/pgm2/fhemweb_textField.js
+++ b/fhem/www/pgm2/fhemweb_textField.js
@@ -1,25 +1,16 @@
-
 function
 FW_textFieldUpdateLine(d)
 {
   var name = "textField."+d[0];
-  //console.log("Cmd "+d);
-
   el = document.getElementById(name);
-
-  if(el) {
+  if(el)
     el.value = d[1];
-  }
- 
 }
 
 function
 textField_setText(el,cmd)
 {
   var v = el.value;
-  //console.log("Got "+v);
-  //console.log("Cmd "+cmd);
-
   var req = new XMLHttpRequest();
   req.open("GET", cmd.replace('%',v), true);
   req.send(null);
@@ -28,4 +19,3 @@ textField_setText(el,cmd)
 FW_widgets['textField'] = { 
   updateLine:FW_textFieldUpdateLine
 };
-