Catch two more common span classes i and b
see #7
diff --git a/xslt/epub2i5.xsl b/xslt/epub2i5.xsl
index 0b1204d..2238f50 100644
--- a/xslt/epub2i5.xsl
+++ b/xslt/epub2i5.xsl
@@ -364,13 +364,13 @@
<xsl:apply-templates/>
</xsl:template>
- <xsl:template match="xhtml:b">
+ <xsl:template match="xhtml:b|xhtml:span[class='b']">
<hi rend="bold">
<xsl:apply-templates/>
</hi>
</xsl:template>
- <xsl:template match="xhtml:i">
+ <xsl:template match="xhtml:i|xhtml:span[class='i']">
<hi rend="italic">
<xsl:apply-templates/>
</hi>