อยากให้ค่าผลการบวกจาก script เเสดงผลในรูป number_format ครับ

<SCRIPT Language="JavaScript">

function startCalc(){ 
interval = setInterval("calc()",1); 
} 

function calc(){ 
price1 = document.frmcal.txt1.value; 
price2 = document.frmcal.txt2.value; 

totalprice = (moveoutprice  * 1) + (moveinprice * 1) 

document.frmcal.txt3.value =  Number(totalprice).toLocaleString('en'); 

}

function stopCalc(){ 
clearInterval(interval); 
}
</SCRIPT>

totalprice.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",")