In case anyone's interested in the status of legacy modules under XOOPS 2.3.2 and PHP5 and XHTML validation, my changes to get vlweather 0.9 to validate for CSS level 2 and XHTML 1.0 Transitional are summarized below. Note: Replacement of $HTTP_GET_VARS with $_GET for PHP5 compatibility already had been done.
1. templates/blocks/vlweatherblock.html
OLD
<div style="text-align: center;">
<b><{$block.location}></b>
<b><{$block.time}></b>
<center><a href="<{$block.moreurl}>"><IMG SRC="<{$block.image}>" alt="" height="50" width="50" border="1"></a></center>
<{$block.conditions}>
<{$block.temp}><{$block.feels}>
<{$block.rel_humidity}>
<{$block.dew}>
<{$block.bar}> <{$block.bardir}>
<{$block.windspeed}>
<{$block.rec_precip}>
<{$block.forecast}>
<{$block.usersettings}>
</div>
NEW
<div style="text-align: center;">
<b><{$block.location}></b><br />
<b><{$block.time}></b><br />
<a href="<{$block.moreurl}>"><img src="<{$block.image}>" alt="" height="50" width="50" border="1" /></a><br />
<{$block.conditions}>
<{$block.temp}><{$block.feels}>
<{$block.rel_humidity}>
<{$block.dew}>
<{$block.bar}> <{$block.bardir}>
<{$block.windspeed}>
<{$block.rec_precip}>
<{$block.forecast}>
<{$block.usersettings}>
</div>
2. blocks/vlweatherblock.php
13 occurrences replaced <br> with <br />
4 occurrences removed <center> and </center> tags
3. change.php
2 occurrences removed <center> and </center> tags
4. class/vlweather.php
OLD
$content ="<center><font class=\"sideboxfont\">" . _VL_BL_CONDAO . "<br />" . $hago . $mago . _VL_BL_AGO ."</font></center>\n";
2 occurrences removed <center> and </center> tags
4 occurrences replaced in href link code of simple ampersands with ampersand string equivalent: ampersand city
