jDownloads и сетка бутстрап - JDownloads

.jd_box.well.span3:nth-child(5n) {
  margin-left: 0;
}

1 ряд
<div class="row-fluid">
span3
.
.
.
</div>
2 ряд
<div class="row-fluid">
span3
.
.
.
</div>

<?php
	$b = "abc";
	$rows = 3; //number in one line
	foreach($a as $k=>$a) {        
		if ($k % $rows == 0) {
			$html .= '<div class = "row-fluid">';
		}
		$html .= '<div class="span'<?php echo (($rows > 0)? 12 / $rows : '1');?>' block_item">';
		
		echo $b; //content
		
		$html .= '</div>';
		if ($k % $rows == $rows - 1) {
			$html .= '<div class = "clearfix"></div></div>';
		}
	}
	if ($k % $rows != $rows - 1) {
		$html .= '</div><div class = "clearfix"></div>';
	}