Problems with "onload" and XHTML Validation

[darkyeffectt]

Hello,

My name is Manuel, I am a web design student and am starting to take my first steps with web design. Recently I tried to validate

this site:

http://accesosnormalizados.com

I used the W3C validator, at first I found about 30 errors, and can correct them all except one that says: 'there is no attribute

"onload"'.

Apparently not support XHTML onload tag, and I use a Joomla extension called Vertical Menu using onload. This is a free extension and works well but I have found it has some bugs, especially when validating the website.

This is the PHP code for extension:

<?php
if( !defined( '_VALID_MOS' ) && !defined( '_JEXEC' ) ) die( 'Direct Access to '.basename(__FILE__).' is not allowed.' );
$database = & JFactory::getDBO();
$menutype = $params->get( 'menutype', 'mainmenu' );
$qry = "SELECT id, name,parent, link,type,browserNav FROM #__menu WHERE menutype = '".$menutype."' AND published = 1 ORDER BY ordering";
$database->setQuery($qry);
$rows = $database->loadObjectList();

if(isset($GLOBALS['vertical_menu'])) $GLOBALS['vertical_menu']++;
else $GLOBALS['vertical_menu'] = 0;

function getMenuChildList($rows, $parentId) {
$childRows = array();
foreach ($rows as $row) {
if ($row->parent == $parentId) {
$childRows[] = $row;
}
}
return $childRows;
}

function drawVerticalMenu($rows, $showsubcats, $parentId = 0) {
$categories = $showsubcats || !$parentId ? getMenuChildList($rows, $parentId) : array();
if ($parentId) {
if (!count($categories)) {
echo '<td class="right"></td></tr>';
return;
} else echo '<td class="arrow">';
echo '<table id="submenu'.$parentId.'" class="submenu" border="0" cellspacing="0" cellpadding="0">';
} else echo '<table id="VerticalMenu'.$GLOBALS['vertical_menu'].'" class="VerticalMenu" border="0" cellspacing="0" cellpadding="0">';
echo '<tr class="border"><td class="topleft"></td><td class="border"></td><td class="topright"></td></tr>';
foreach ($categories as $category) {
$link = $category->link. (preg_match("/^http:\/\/|^https:\/\//",$category->link)? "" : '&Itemid='.$category->id);
$blank = $category->browserNav? ' target="_blank" ' : ' ';
echo '<tr id="menu'.$category->id.'" class="menu"><td class="left"></td><td class="center"><a'.$blank.'href="'.$link.'">'.$category-

>name.'&nbsp;</a></td>';
drawVerticalMenu($rows, $showsubcats, $category->id);
}
echo '<tr class="border"><td class="bottomleft"></td><td class="border"></td><td class="bottomright"></td></tr></table>';
if ($parentId && count($categories)) echo '</td></tr>';
}

$document = &JFactory::getDocument();
$document->addScript('https://ajax.googleapis.com/ajax/libs/dojo/1.5.0/dojo/dojo.xd.js');
$document->addScript('modules/mod_vertical_menu/script/menu.js');
$document->addStyleSheet('modules/mod_vertical_menu/style/menu.css');
$document->addCustomTag('
<style type="text/css">
div#MenuContainer'.$GLOBALS['vertical_menu'].' table#VerticalMenu'.$GLOBALS['vertical_menu'].' {
width: '.$params->get('categorymenu_width', 150).'px;
opacity: '.$params->get('categorymenu_out', 0.8).';
FILTER: progidXImageTransform.Microsoft.Alpha(Opacity='.($params->get('categorymenu_out', 0.8)*100).');
}
</style>
');
echo '<div id="MenuContainer'.$GLOBALS['vertical_menu'].'">';
drawVerticalMenu($rows, $params->get('show_subcats', 1));

echo '<img src="modules/mod_vertical_menu/images/center.gif" style="display:none" onload="new WW.VerticalMenu({out : '.$params->get('categorymenu_out',

0.8).',over : '.$params->get('categorymenu_over', 1).',duration : '.$params->get('categorymenu_fade', 300).',id : '.$GLOBALS['vertical_menu'].',width :

'.$params->get('categorymenu_width', 150).'});" alt=""/>';
echo '</div>';

?>


The problem is at the end:


echo '<img src="modules/mod_vertical_menu/images/center.gif" style="display:none" onload="new WW.VerticalMenu({out:'.$params-> get (' categorymenu_out ', 0.8). 'over'. $ params-> get ('categorymenu_over', 1). ', duration:'. $ params-> get ('categorymenu_fade', 300). ', id:'. $ GLOBALS ['vertical_menu' ]. ', width:'. $ params-> get ('categorymenu_width', 150). '}); "alt =" "/>';
echo '</ div>';
?>

I think the extension uses the onload event to display the sub-menus when the user moves the mouse pointer over it.

What I want is to replace the onload with other event handler or some other label that is supported by XHTML and that is as similar to onload.

I would appreciate your help ...

[Luno]

You can use JS events
<object>.onload=<function>();

[darkyeffectt]

Hi Luno,

Thanks a lot for your reply...

Forgive my ignorance, but I am a rookie. As you can see in the onload event code is called from a tag <img>:

echo '<img src="modules/mod_vertical_menu/images/center.gif" style="display:none" onload="new WW.VerticalMenu({out:'.$params-> get (' categorymenu_out ', 0.8). 'over'. $ params-> get ('categorymenu_over', 1). ', duration:'. $ params-> get ('categorymenu_fade', 300). ', id:'. $ GLOBALS ['vertical_menu']. ', width:'. $ params-> get ('categorymenu_width', 150). '});" alt =" "/>';

And you tell me to use <object>.onload=<function>();

What I need to know is if can I paste that piece of code from within the <img>.? Can you give me some more details?

Thanks anyway

[Luno]

You can set ID for IMG tag and then call onload method of this object from getElementById.
I want to show sample code:

<!DOCTYPE>
<html>
<head><title>1</title>
<script type="text/javascript">
function init() {
alert(1);
}
</script>
</head>
<body>
<img id="a" src="img.png" />
<script type="text/javascript">
document.getElementById('a').onload=init;
</script>
</body>
</html>

Good Luck!

[Luno]

Oops. I forgot to say that it work in normal browser only.
If you think that IE<9 it's old, you can use this code and forget problems.
Else you must make try/catch construction with few variants of onload method (in IE it have other name )