전화번호 하이픈 넣기 > jquery

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<input type="text" onkeyup="func_phone_check('id_phone');" maxlength="13" name="id_phone" id="id_phone" />

<script>

    function func_phone_check( obj ) {
        $("#"+obj).val( $("#"+obj).val().replace(/[^0-9]/g, '').replace(/^(\d{0,3})(\d{0,4})(\d{0,4})$/g, "$1-$2-$3").replace(/(\-{1,2})$/g, "") );
    }

</script>