function buku(k){
	document.getElementById('BukuKategoriId').value = k;
	document.buku.submit();
}
function number_format(number){
	var str = '', nh, c, x;
	nh = number.toString();
	c = 1;
	for(x = nh.length-1; x >= 0; x--, c++){
		str += nh.charAt(x);
		if(c%3==0 && c != nh.length)
			str += '.'; 
	}
	str = str.split("");
	str.reverse();
	str = str.join("");
	return str;
}
function pilkota(tb,ttl){
	var frm=document.formtrans;
	var tberat = tb;
	var piltarif = parseInt(frm.cbokota.value);
	var hasil;
	var tarif;
	var i =frm.cbokota.value.lastIndexOf("-");
	tarif = (Math.ceil(tberat)*piltarif);
	if(tberat>=150)tarif+=tarif*0.5;
	if(tarif < 20000) tarif = 20000;
	if(tberat < 1) tarif = 20000;
	hasil = (tarif+ttl);
	document.getElementById('txttarif').innerHTML=number_format(frm.cbokota.value.substring(0,i));
	document.getElementById('txttarif2').innerHTML=number_format(tarif);
	document.getElementById('txttbayar').innerHTML=number_format(hasil);
}
function batal(id){
	document.getElementById(id).value=0
	document.formtrans.submit()
}