อยากให้ เอาข้อมูลเกี่ยวกับ u_phone pavlue และ total_phone ออก และเพิ่ม textbox ชื่อ total_room รับค่าจากฐานข้อมูล

<script type="text/javascript">
	    function addCommas(nStr) {
        nStr += '';
        x = nStr.split('.');
        x1 = x[0];
        x2 = x.length > 1 ? '.' + x[1] : '';
        var rgx = /(\d+)(\d{3})/;
        while (rgx.test(x1)) {
            x1 = x1.replace(rgx, '$1' + ',' + '$2');
        }
        return x1 + x2;
    }

    //*define object "Bill"
    function Bill(){
        //get form value
        var unit = {
            'water' : document.form2.wvalue.value,
            'fire' : document.form2.fvalue.value
        }
        var rate = {
            'water' : document.form2.u_water.value,
            'fire' : document.form2.u_fire.value
        }

        //private function
        this.calc = function(unit, rate){
            unit = parseFloat(unit);
            rate = parseFloat(rate);

            if(!unit || !rate){return 0;}
            return unit * rate;
        }

        //public properties
        this.water = this.calc(unit['water'],rate['water']);
        this.fire = this.calc(unit['fire'],rate['fire']);
    }

    function calcBill(){
        var bill = new Bill();

        document.form2.total_water.value = addCommas(bill.water.toFixed(2));
        document.form2.total_fire.value = addCommas(bill.fire.toFixed(2));
        document.form2.be_total.value = addCommas((bill.water + bill.fire + document.form2.total_room.value*1).toFixed(2));
    }

</script>


<form name="form2">
	<br />wvalue<input name="wvalue" value="10" />
	<br />fvalue<input name="fvalue" value="20" />
	
	<br />uwater<input name="u_water" value="3" />
	<br />ufire<input name="u_fire" value="2" />

	<br />total water<input name="total_water" />
	<br />total fire<input name="total_fire" />
	<?php $value_room = 100; ?>
	<br />total room<input name="total_room" value="<?php echo (int)$value_room;?>" />
	
	<br /><input name="be_total" />	
	<br /><input type="button" value="cal" onclick="calcBill();" />
</form>