How to replace double quotes with single quotes in XSLT?

I am creating slide shows using XML data through XSLT. Part of the process initializes the array with the header:

item[0] = ["How do I jump?"];
item[1] = ["I know how to jump!"];
item[2] = ["Did you read "how to jump""];

Please note that the third element has the name of the book in double quotes? Well, initializing this element leads to problems with compiling the stylesheet (as it should be), but is there a way around the double quotes and replacing them with single quotes?

<xsl:variable name="apos"><xsl:text>'</xsl:text></xsl:variable>
<xsl:variable name="double_quote"><xsl:text>"</xsl:text></xsl:variable>

<xsl:for-each select="/data/calendar/event/title">  
        <xsl:variable name="index">
            <xsl:value-of select="position() - 1"/>
        </xsl:variable>
        <xsl:variable name="safeTitle" select="translate(text(),$double_quote, $apos)" /><!-- prevents double quotes from being used inside an array using double quotes -->           
        fadetitlesSS12<xsl:value-of select="/data/calendar/id" />[<xsl:value-of select="$index" />]=["<xsl:value-of select="$safeTitle" />"];
    </xsl:for-each>