Hey Joseph,
I've ran through the Extension Development book and have run into an issue with Joomla! 1.5. When creating components, I can not seem to get the publish/unpublish icon to function as intended and was wondering if you had a solution or any tips. Here is my display function:

function showKinesisAvailable($option, &$rows)
{
echo '<form action="index.php" method="post" name="adminForm">';
echo '<table class="adminlist">';

echo '<thead>';
echo '<tr>';

echo '<th width="20">';
echo '<input type="checkbox" name="toggle" value="" onclick="checkAll('.count($rows).';" />';
echo '</th>';

echo '<th class="title">Name</th>';
echo '<th width="20%" nowrap="nowrap">Page title</th>';
echo '<th width="5%" nowrap="nowrap">Published</th>';

echo '</tr>';
echo '</thead>';

jimport('joomla.filter.output';
$k = 0;
$i = 0;
$n=count($rows);
while($i < $n)
{
$row = $rows[$i];
$checked = JHTML::_('grid.id',$i,$row->id);
$published = JHTML::_('grid.published',$row,$i);
$link = JFilterOutput::ampReplace('index.php?option='.$option.'&task=edit&cid[]=&#039;.$row-&gt;id);
echo &#039;&lt;tr class=&quot;row&quot;&#039;.$k.&#039;&quot;&gt;&#039;;
echo &#039;&lt;td&gt;&#039;;
echo $checked;
echo &#039;&lt;/td&gt;&#039;;

echo &#039;&lt;td&gt;&#039;;
echo &#039;&lt;a href=&quot;&#039;.$link.&#039;&quot;&gt;&#039;;
echo $row-&gt;name;
echo &#039;&lt;/a&gt;&#039;;
echo &#039;&lt;/td&gt;&#039;;

echo &#039;&lt;td&gt;&#039;;
echo $row-&gt;title;
echo &#039;&lt;/td&gt;&#039;;

echo &#039;&lt;td align=&quot;center&quot;&gt;&#039;;
echo $published;
echo &#039;&lt;/td&gt;&#039;;

echo &#039;&lt;/tr&gt;&#039;;

$k = 1 - $k;
$i++;
}

echo &#039;&lt;/table&gt;&#039;;
echo &#039;&lt;input type=&quot;hidden&quot; name=&quot;option&quot; value=&quot;&#039;.$option.&#039;&quot; /&gt;&#039;;
echo &#039;&lt;input type=&quot;hidden&quot; name=&quot;task&quot; value=&quot;&quot; /&gt;&#039;;
echo &#039;&lt;input type=&quot;hidden&quot; name=&quot;boxchecked&quot; value=&quot;0&quot; /&gt;&#039;;

echo &#039;&lt;/form&gt;&#039;;
}

I had to change JOutputFilter to JFilt;
$checked = JHTML::_('grid.id',$i,$row->id);
$published = JHTML::_('grid.published',$row,$i);
$link = JFilterOutput::ampReplace('index.php?option='.$option.'&task=edit&cid[]='.$row->id);
echo '<tr class="row"'.$k.'">';
echo '<td>';
echo $checked;
echo '</td>';

echo '<td>';
echo '<a href="'.$link.'">';
echo $row->name;
echo '</a>';
echo '</td>';

echo '<td>';
echo $row->title;
echo '</td>';

echo '<td align="center">';
echo $published;
echo '</td>';

echo '</tr>';

$k = 1 - $k;
$i++;
}

echo '</table>';
echo '<input type="hidden" name="option" value="'.$option.'" />';
echo '<input type="hidden" name="task" value="" />';
echo '<input type="hidden" name="boxchecked" value="0" />';

echo '</form>';
}

I had to change JOutputFilter to JFilterOutput in order to find the class. Other than that, I couldn't really find any thing glaring in the differences between the code and book. Any help/tips would be appreciated. Thanks!

Thanks for buying the book! Do you have code in your component that checks for the 'publish' and 'unpublish' tasks? (The book doesn't cover these functions until Chapter 6.)