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@@ -808,6 +816,10 @@ span.charliteral {
 	color: var(--code-char-literal-color);
 }
 
+span.xmlcdata {
+	color: var(--code-xml-cdata-color);
+}
+
 span.vhdldigit { 
 	color: var(--code-vhdl-digit-color);
 }
@@ -1222,8 +1234,7 @@ div.directory {
     width: 24px;
     height: 18px;
     margin-bottom: 4px;
-    background-image:url('folderopen.png');
-    background-position: 0px -4px;
+    background-image:var(--icon-folder-open-image);
     background-repeat: repeat-y;
     vertical-align:top;
     display: inline-block;
@@ -1233,8 +1244,7 @@ div.directory {
     width: 24px;
     height: 18px;
     margin-bottom: 4px;
-    background-image:url('folderclosed.png');
-    background-position: 0px -4px;
+    background-image:var(--icon-folder-closed-image);
     background-repeat: repeat-y;
     vertical-align:top;
     display: inline-block;
@@ -1653,7 +1663,7 @@ div.toc {
 }
 
 div.toc li {
-        background: url("bdwn.png") no-repeat scroll 0 5px transparent;
+        background: var(--toc-down-arrow-image) no-repeat scroll 0 5px transparent;
         font: 10px/1.2 var(--font-family-toc);
         margin-top: 5px;
         padding-left: 10px;
@@ -1682,11 +1692,11 @@ div.toc li.level2 {
 }
 
 div.toc li.level3 {
-        margin-left: 30px;
+        margin-left: 15px;
 }
 
 div.toc li.level4 {
-        margin-left: 45px;
+        margin-left: 15px;
 }
 
 span.emoji {
diff --git a/docs/html/doxygen.svg b/docs/html/doxygen.svg
index d42dad5..79a7635 100644
--- a/docs/html/doxygen.svg
+++ b/docs/html/doxygen.svg
@@ -1,4 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "https://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
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@@ -17,7 +19,7 @@
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  </defs>
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 </svg>
diff --git a/docs/html/search/search.js b/docs/html/search/search.js
index e103a26..9b7a52a 100644
--- a/docs/html/search/search.js
+++ b/docs/html/search/search.js
@@ -156,7 +156,7 @@ function SearchBox(name, resultsPath, extension)
 
   this.OnSearchSelectHide = function()
   {
-    this.hideTimeout = setTimeout(this.name +".CloseSelectionWindow()",
+    this.hideTimeout = setTimeout(this.CloseSelectionWindow.bind(this),
                                   this.closeSelectionTimeout);
   }
 
@@ -211,7 +211,7 @@ function SearchBox(name, resultsPath, extension)
       if (searchValue != "") // non-empty search
       {
         // set timer for search update
-        this.keyTimeout = setTimeout(this.name + '.Search()',
+        this.keyTimeout = setTimeout(this.Search.bind(this),
                                      this.keyTimeoutLength);
       }
       else // empty search field
@@ -356,7 +356,11 @@ function SearchBox(name, resultsPath, extension)
         document.getElementById("NoMatches").style.display="none";
       }
  
-      searchResults.Search(searchValue);
+      if (idx!=-1) {
+        searchResults.Search(searchValue);
+      } else { // no file with search results => force empty search results
+        searchResults.Search('====');
+      }
 
       if (domPopupSearchResultsWindow.style.display!='block')
       {
