diff --git a/minmax/index.html b/minmax/index.html
index 86a41a6..42bb831 100644
--- a/minmax/index.html
+++ b/minmax/index.html
@@ -10,7 +10,7 @@
 </HEAD>
 <body text="#000000" bgcolor="#FFFFFF" link="#0000EE" vlink="#551A8B" alink="#FF0000">
 
-<h2><img src="../../../c++boost.gif" WIDTH="276" HEIGHT="86">Header &lt;<A
+<h2><img src="../../../boost.png" WIDTH="276" HEIGHT="86">Header &lt;<A
 HREF="../../../../boost/minmax.hpp">boost/algorithm/minmax.hpp</A>&gt; </H2>
 
 <quote>
diff --git a/string/doc/external_concepts.html b/string/doc/external_concepts.html
index 98ccf90..7a4a502 100644
--- a/string/doc/external_concepts.html
+++ b/string/doc/external_concepts.html
@@ -1,4 +1,4 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title> Concepts and External Concepts </title><meta http-equiv="Content-Type"content="text/html; charset=iso-8859-1"></head> <body><table  ><tr  ><td  ><img src="cboost.gif" width="100%" border="0"></td><td  ><h1  >Concepts and External Concepts</h1></td></tr></table><p  >Generic programming in C++ is characterized by the use of function and class templates where
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title> Concepts and External Concepts </title><meta http-equiv="Content-Type"content="text/html; charset=iso-8859-1"></head> <body><table  ><tr  ><td  ><img src="../../../../boost.png" width="100%" border="0"></td><td  ><h1  >Concepts and External Concepts</h1></td></tr></table><p  >Generic programming in C++ is characterized by the use of function and class templates where
                 the template parameter(s) must satisfy certain requirements.Often these
                 requirements are so important that we give them a name: we call
                 such a set of type requirements a <b>concept</b>. We say that a type <i>
