<?php
function smarty_modifier_brends($brend,$str){
	$r = (strlen($str)>0) ? explode(',',$str) : array();
	$arr = array();$f=0;
	foreach($r as $key=>$s){
		if($s==$brend){$f++;unset($r[$key]);}
	}
	if($f==0)$r[] = $brend;
	
        return implode(',',$r);
}
?>