var Cost, GST, CAS, Grand_Total;
function tally()
 {
 Cost = 0;
 if (document.orderform.pacote.value == ""){ Cost = Cost + 0;}
 if (document.orderform.pacote.value == "1 - Fotografia + dvd"){ Cost = Cost + 500.00;}
 if (document.orderform.pacote.value == "2 - Fotografia Simples"){ Cost = Cost + 800.00;}
 if (document.orderform.pacote.value == "3 - Fotografia + Video"){ Cost = Cost + 1340.00;}
 if (document.orderform.pacote.value == "4 - Fotografia + Video +Album Digital"){ Cost = Cost + 1750.00;}


 GST = (Cost * 0.10);
 CAS = (Cost * 0.65);
 Cost = euro(Cost);
 GST = euro(GST);
 CAS = euro(CAS);


 Grand_Total = parseFloat(Cost) - parseFloat(GST) - parseFloat(CAS)
 Grand_Total = euro(Grand_Total);
 document.orderform.CAS.value = "" + CAS;
 document.orderform.Total.value = "" + Cost;
 document.orderform.GST.value = "" + GST;
 document.orderform.GrandTotal.value = "" + Grand_Total;
 }
function euro (amount)
{
 amount = parseInt(amount * 100);
 amount = parseFloat(amount/100);
 if (((amount) == Math.floor(amount)) && ((amount - Math.floor (amount)) == 0))
 {
 amount = amount + ".00"
 return amount;
 }
 if ( ((amount * 10) - Math.floor(amount * 10)) == 0)
 {
 amount = amount + "0";
 return amount;
 }
 if ( ((amount * 100) - Math.floor(amount * 100)) == 0)
 {
 amount = amount;
 return amount;
 }
 return amount;
}