function calc(){
	var Ask=85;
	var Bid=document.next_sim.bid.value;
	var Amount=document.next_sim.amount.value*10000;
	var Period=document.next_sim.period.value;

	var Result1= document.next_sim.result1.value
	var Result2= document.next_sim.result2.value

	Result1 = (Bid-Ask)*Amount;
	Result1 = (Result1 * 1000);
	Result1 = Math.round(Result1);
	Result1 = (Result1 / 1000);
	
	

	
	
	document.next_sim.result1.value = addcomma(Result1);

	Result2 = (Amount / 10000)*Period*107;
	document.next_sim.result2.value = addcomma(Result2);

	Result4 = Result1+Result2;
	document.next_sim.result4.value = addcomma(Result4);
}

function addcomma(Result){
	var num = new String(Result).replace(/,/g, "");
	while(num != (num = num.replace(/^(-?\d+)(\d{3})/, "$1,$2")));
	return num;
}