diff --git a/fhem/www/pgm2/fhemweb.js b/fhem/www/pgm2/fhemweb.js
index 693c876c3..ef538c952 100644
--- a/fhem/www/pgm2/fhemweb.js
+++ b/fhem/www/pgm2/fhemweb.js
@@ -842,13 +842,14 @@ FW_longpoll()
   var retry;
   if(filter == "") {
     $("embed").each(function() {
-      if($(this.getSVGDocument()).length == 0 && !retry && 
-                        filter != ".*" && --embedLoadRetry > 0) {
+      if(FW_getSVG(this) == undefined && !retry &&
+         filter != ".*" && --embedLoadRetry > 0) {
         retry = 1;
         setTimeout(FW_longpoll, 100);
         return;
       }
-      if($(this.getSVGDocument()).find("svg[flog]").attr("flog"))
+      
+      if($(FW_getSVG(this)).find("svg[flog]").attr("flog"))
         filter=".*";
     });
     if(retry)
@@ -1510,9 +1511,19 @@ scriptAttribute(sname)
 }
 /*************** SCRIPT LOAD FUNCTIONS END **************/
 
-function print_call_stack() {
+function
+print_call_stack() {
   var stack = new Error().stack;
   console.log("PRINTING CALL STACK");
   console.log( stack );
 }
 
+function
+FW_getSVG(emb)
+{
+  if(emb.contentDocument)
+    return emb.contentDocument;
+  if(typeof emb.getSVGDocument == "function")
+    return emb.getSVGDocument();
+  return undefined;
+}
diff --git a/fhem/www/pgm2/svg.js b/fhem/www/pgm2/svg.js
index c5803b3a0..ba8a25a00 100644
--- a/fhem/www/pgm2/svg.js
+++ b/fhem/www/pgm2/svg.js
@@ -350,7 +350,7 @@ svg_init(par)    // also called directly from perl, in race condition
   $("embed").each(function(){
     var e = this;
     var src = $(e).attr("src");
-    var ed = e.getSVGDocument();
+    var ed = FW_getSVG(e);
     if(src.indexOf("SVG_showLog") < 0 || !ed)
       return;
     var sTag = $("svg", ed)[0]; // "not well-formed" warning in FireFox
@@ -380,11 +380,12 @@ FW_svgUpdateDevs(devs)
   // if matches, refresh the SVG by removing and readding the embed tag
   var embArr = document.getElementsByTagName("embed");
   for(var i = 0; i < embArr.length; i++) {
-    if(typeof embArr[i].getSVGDocument != "function")
-      continue;
-    var svg = embArr[i].getSVGDocument();
+    var svg = FW_getSVG(embArr[i]);
     if(!svg || !svg.firstChild || !svg.firstChild.nextSibling)
       continue;
+    if(svg.contentType != "image/svg+xml" &&
+       typeof embArr[i].getSVGDocument != "function")
+      continue;
     svg = svg.firstChild.nextSibling;
     var flog = svg.getAttribute("flog");
     if(!flog)