diff --git a/doxygen/extra_stylesheet.css b/doxygen/extra_stylesheet.css
index 5dc201c3..9ca1cec8 100644
--- a/doxygen/extra_stylesheet.css
+++ b/doxygen/extra_stylesheet.css
@@ -1,129 +1,129 @@
 body {
-	background-color: #222;
-	color: #ccc; 
-	overflow-x: hidden;
+   background-color: #222;
+   color: #ccc; 
+   overflow-x: hidden;
 }
 
 #nav-tree {
-	background-color: #222;
-	background-image: none;
+   background-color: #222;
+   background-image: none;
 }
 
 #side-nav {
-	width: 300px;
+   width: 300px;
 }
 
 #titlearea {
-	border: none;
-	padding: 5px;
+   border: none;
+   padding: 5px;
 }
 
 div.header {
-	background-color: #2a2a2a !important;
+   background-color: #2a2a2a !important;
 }
 
 h2.groupheader {
-	color: #ccc;
+   color: #ccc;
 }
 
 .mdescLeft, .mdescRight, .memItemLeft, .memItemRight, .memTemplItemLeft, .memTemplItemRight, .memTemplParams {
-	background-color: #333;
-	color: #ccc;
+   background-color: #333;
+   color: #ccc;
 }
 
 .directory tr.even {
-	background-color: #3f3f3f;
+   background-color: #3f3f3f;
 }
 
 a, .contents a:visited {
-	color: #548cff;
+   color: #548cff;
 }
 
 .memtitle {
-	background-color: #555 !important;
-	background-image: none;
+   background-color: #555 !important;
+   background-image: none;
 
-    border-top: 1px solid #717171;
-    border-left: 1px solid #717171;
-    border-right: 1px solid #717171;
+   border-top: 1px solid #717171;
+   border-left: 1px solid #717171;
+   border-right: 1px solid #717171;
 }
 
 .memdoc, dl.reflist dd {
-	background-color: #444;
+   background-color: #444;
 
-    border-bottom: 1px solid #717171;
-    border-left: 1px solid #717171;
-    border-right: 1px solid #717171;
+   border-bottom: 1px solid #717171;
+   border-left: 1px solid #717171;
+   border-right: 1px solid #717171;
 }
 
 .memproto, dl.reflist dt {
-	background-color: #555;
-	color: #ccc;
-	text-shadow: 0px 1px 1px rgba(0, 0, 0, 0.9);
+   background-color: #555;
+   color: #ccc;
+   text-shadow: 0px 1px 1px rgba(0, 0, 0, 0.9);
 
-	border-top: 1px solid #717171;
-    border-left: 1px solid #717171;
-    border-right: 1px solid #717171;
+   border-top: 1px solid #717171;
+   border-left: 1px solid #717171;
+   border-right: 1px solid #717171;
 }
 
 div.header {
-	border-bottom: 1px solid #717171;
-	background-image: none;
+   border-bottom: 1px solid #717171;
+   background-image: none;
 }
 
 .paramname {
-	color: #ff5a5a;
+   color: #ff5a5a;
 }
 
 .memtemplate {
-	color: #6e9eff;
+   color: #6e9eff;
 }
 
 .memSeparator, h2.groupheader {
-	border-bottom: 1px solid #545454;
+   border-bottom: 1px solid #545454;
 }
 
 .navelem, .navpath ul {
-	background-color: #333;
-	background-image: none;
+   background-color: #333;
+   background-image: none;
 }
 
 .navpath ul {
-	border: solid 1px #717171;
+   border: solid 1px #717171;
 }
 
 .navpath li.footer {
-	color: #548cff;
+   color: #548cff;
 }
 
 .navpath li.navelem a, .navpath li.navelem a:visited {
-	color: #ccc;
-	text-shadow: 0px 1px 1px rgba(0, 0, 0, 0.9);
+   color: #ccc;
+   text-shadow: 0px 1px 1px rgba(0, 0, 0, 0.9);
 }
 
 .ui-resizable-e {
-	background-image: none;
-	background-color: #717171;
+   background-image: none;
+   background-color: #717171;
 }
 
 .sm-dox {
-	background-image: none;
-	background-color: #333;
+   background-image: none;
+   background-color: #333;
 }
 
 .sm-dox a {
-	color: #ccc;
-    text-shadow: 0px 1px 1px #000;
+   color: #ccc;
+   text-shadow: 0px 1px 1px #000;
 }
 
 .sm-dox a span.sub-arrow {
-	border-color: #ccc transparent transparent transparent;
+   border-color: #ccc transparent transparent transparent;
 }
 
 .sm-dox a, .sm-dox a:focus, .sm-dox a:active, .sm-dox a:hover, .sm-dox a.highlighted {
-	background-image: none;
+   background-image: none;
 }
 
 #main-nav {
-	border-top: 1px solid #717171;
+   border-top: 1px solid #717171;
 }
\ No newline at end of file