function showValue() {
var fom = document.counting;
var money = eval("fom.moneyValue");
var total = eval("fom.total");
total.value = Math.abs(total.value.replace(/\./g,""))+Math.abs(money.value.replace(/\./g,""));
var node=document.createElement("LI");
var textnode=document.createTextNode(money.value);
node.appendChild(textnode);
document.getElementById("showmoney").appendChild(node);
}

<form method="POST" name="counting">
<select name="moneyValue">
<option value="1000">1000</option>
<option value="5000">5000</option>
<option value="10000">10000</option>
<option value="25000">25000</option>
<option value="50000">50000</option>
<option value="100000">100000</option>
</select>
<input type="hidden" name="total" value=0>
<input type="button" name="add" value="ADD">
</form>
<ul id="showmoney">
</ul>

gan, ane lagi iseng buat program kayak chip poker gitu gan..
contoh jika chip 1000 di bet sampai 5x, ntar itu chip otomatis ngubah chip 1000 itu jadi 5000(sesuai dengan chip yang ada).. ane udah buat gan versi gini, tapi ane gak tau cara ngebulatin nilai valuenyanya gan..
mohon pencerahannya gan..