jquery, checkbox php, 배열로 된 값 체크박스 값 설정

<ul class="ulsearch" style="margin-left:15px;">

<li class="lihead">파일타입</li>

<li><label><input type="checkbox" name="ca_id3[]" value="템플릿" >&nbsp;템플릿</label></li>

<li><label><input type="checkbox" name="ca_id3[]" value="편집이미지">&nbsp;편집이미지</label></li>

<li><label><input type="checkbox" name="ca_id3[]" value="무료이미지">&nbsp;무료이미지</label></li>

<?

if(is_array($_GET[ca_id2])){

$str_ca_id2 = implode(",",$_GET[ca_id2]);

}

?>

<script>

var str_ca_id3 = "<?=$str_ca_id3?>";

$("input:checkbox[name='ca_id3[]']").each(function(index){

if(str_ca_id3.indexOf($(this).val()) > -1){

$(this).attr("checked", true);

}

});

</script>

</ul>