diff --git a/doc/src/sgml/stylesheet-html-common.xsl b/doc/src/sgml/stylesheet-html-common.xsl
index b105005235..9edce52a10 100644
--- a/doc/src/sgml/stylesheet-html-common.xsl
+++ b/doc/src/sgml/stylesheet-html-common.xsl
@@ -14,7 +14,7 @@
 <!-- Parameters -->
 <xsl:param name="make.valid.html" select="1"></xsl:param>
 <xsl:param name="generate.id.attributes" select="1"></xsl:param>
-<xsl:param name="ignore.image.scaling" select="1"/>
+<xsl:param name="make.graphic.viewport" select="0"/>
 <xsl:param name="link.mailto.url">pgsql-docs@lists.postgresql.org</xsl:param>
 <xsl:param name="toc.max.depth">2</xsl:param>
 
diff --git a/doc/src/sgml/stylesheet.css b/doc/src/sgml/stylesheet.css
index c355fbecac..1a66c789d5 100644
--- a/doc/src/sgml/stylesheet.css
+++ b/doc/src/sgml/stylesheet.css
@@ -102,3 +102,10 @@ var		{ font-family: monospace; font-style: italic; }
 acronym		{ font-style: inherit; }
 
 .option		{ white-space: nowrap; }
+
+/* make images not too wide on larger screens */
+@media (min-width: 800px) {
+  .mediaobject {
+    width: 75%;
+  }
+}