protected function renderHeader()
{
$string = '';
if ($className = $this->getCssClass()) {
$string = <<<EOD
<table class="{$className}">
\t<tr class="header">
\t\t<th colspan="5">
\t\t\tApplication Log
\t\t</th>
\t</tr><tr class="description">
\t <th> </th>
\t\t<th>Category</th><th>Message</th><th>Time Spent (s)</th><th>Cumulated Time Spent (s)</th>
\t</tr>
EOD;
} else {
$string = <<<EOD
<table cellspacing="0" cellpadding="2" border="0" width="100%" style="table-layout:auto">
\t<tr>
\t\t<th style="background-color: black; color:white;" colspan="5">
\t\t\tApplication Log
\t\t</th>
\t</tr><tr style="background-color: #ccc; color:black">
\t <th style="width: 15px"> </th>
\t\t<th style="width: auto">Category</th><th style="width: auto">Message</th><th style="width: 120px">Time Spent (s)</th><th style="width: 150px">Cumulated Time Spent (s)</th>
\t</tr>
EOD;
}
return $string;
}