[HTML]<input type="text" name="title" size="60" value="{$title_value}"/>[/HTML]
the above should output the data value of the parameter $title_value to the output data value of input/@value.
This will work if you know for sure the parameter $title_value is allways populated, or you don't care if the attribute input/@value is empty.
If you do care, you should use the following syntax:
[HTML]
<input ...>
<xsl:attribute name="value">
<xsl:choose>
<xsl:when test="string-length($title_value) > 0">
<xsl:value-of select="$title_value"/>
</xsl:when>
<xsl
therwise>some other value</xsl
therwise>
</xsl:choose>
</xsl:attribute>
</input>
[/HTML]