Error Missing argument 1 for template::menu_left(), called ครับ ช่วยแก้ให้หน่อยครับ

class template{
	function include_page($page,$theme){
		if($page=="" and $page=="index"){
			include("theme/".$theme."/temp/index.php");
		}
	}
	function menu_left($db){
		$sql = "SELECT * FROM `phoomin201_mcc`.`".$db."`menu";
		$n = query_num($sql);
		if($n!=0){
			while($m = query_array($sql)){
				$menu .= '<li><a href="'.$m['url'].'">'.$m['text'].'</a></li>';	
			}
			return $menu;
		}else{}
	}
}

<div class="row-fluid jumbotron">
	<div class="span2">
        <div class="well" style="max-width: 340px; padding: 8px 0;">
            <ul class="nav nav-list">
            	<?=$template->menu_left($site['db']);?>
                <li class="nav-header">Login & Register</li>
                <li><a href="#">Login</a></li>
                <li><a href="#">Register</a></li>
                <li class="divider"></li>
                <li><a href="#">Help</a></li>
            </ul>
        </div>
    </div>
	<div class="span8 well">
    	<?=$_GET['id'];?>,<?=$_GET['p'];?><br />
		<?="index.php?id=".$_GET['id']."&p=".$_GET['p'];?><br />
        <?=l("index.php?id=".$_GET['id']."&p=".$_GET['p']);?>
    </div>
    <div class="span2 well"></div>
</div>
<script>
	$('.dropdown-menu').dropdown();
</script>