php 숫자값 출력방식에 대해 질문합니다. 채택완료

<? if ($this->itemInfo[cust_amount]) { // 1.00.03 ?>
                <tr height=25>
                    <td>    · 시중가격</td>
                    <td align=center>:</td>
                    <td><?=number_format($this->itemInfo[cust_amount])?> 원</td>
                </tr>
                <tr><td colspan=3 height=1 background='<?=$gConf['TEMPLATE_URL']?>/image-shop/dot_line.gif'></td></tr>
                <? } ?></p><p><?
 //print_r($this->itemInfo);
?>
                <tr height=25>
                    <td>    · 판매가격</td>
                    <td align=center>:</td>
                    <td><input type=text name=disp_sell_amount size=12 style='text-align:right; border:none; border-width:0px; font-weight:bold; width:80px; font-family:Tahoma;'  readonly > 원
                        <input type=hidden name=m_it_amount value='0'>
                    </td>
                </tr>
                <tr><td colspan=3 height=1 background='<?=$gConf['TEMPLATE_URL']?>/image-shop/dot_line.gif'></td></tr></p><p> </p><p>/////////////////////////////////////////////////생략//////////////////////////////////////////////////////////</p><p> </p><p>function amount_change()
{
    var member_amount = parseInt('<?=$this->itemInfo[amount2]?>'); 
    var special_amount = parseInt('<?=$this->itemInfo[amount3]?>'); 
    var basic_point  = parseFloat('<?=$this->itemInfo[point]?>');
    var cust_amount  = parseFloat('<?=$this->itemInfo[cust_amount]?>');
 var basic_amount;</p><p>    var f = document.fitem;
    var opt1 = 0;
    var opt2 = 0;
    var opt3 = 0;
    var opt4 = 0;
    var opt5 = 0;
    var opt6 = 0;
    var ct_qty = 0;
    
//시중가격,회원가격,특별가격순으로
 if(cust_amount > 0) basic_amount = cust_amount;
 if(member_amount > 0) basic_amount = member_amount;
 if(special_amount > 0) basic_amount = special_amount;</p><p>
    if (typeof(f.ct_qty) != 'undefined')
        ct_qty = parseInt(f.ct_qty.value);</p><p>    if (typeof(f.it_opt1) != 'undefined') opt1 = get_amount(f.it_opt1.value);
    if (typeof(f.it_opt2) != 'undefined') opt2 = get_amount(f.it_opt2.value);
    if (typeof(f.it_opt3) != 'undefined') opt3 = get_amount(f.it_opt3.value);
    if (typeof(f.it_opt4) != 'undefined') opt4 = get_amount(f.it_opt4.value);
    if (typeof(f.it_opt5) != 'undefined') opt5 = get_amount(f.it_opt5.value);
    if (typeof(f.it_opt6) != 'undefined') opt6 = get_amount(f.it_opt6.value);</p><p>    var amount = basic_amount + opt1 + opt2 + opt3 + opt4 + opt5 + opt6;
    var point  = parseInt(basic_point);</p><p>    if (typeof(f.m_it_amount) != 'undefined')
        f.m_it_amount.value = amount;</p><p>    if (typeof(f.disp_sell_amount) != 'undefined')
        f.disp_sell_amount.value = number_format(String(basic_amount * ct_qty));</p><p>    if (typeof(f.disp_cust_amount) != 'undefined')
        f.disp_cust_amount.value = number_format(String(cust_amount * ct_qty));</p><p>    if (typeof(f.it_point) != 'undefined') {
        f.it_point.value = point;
        f.disp_point.value = number_format(String(point * ct_qty));
    }
}