function grandtotal(){
var qty=form1.qty.value;
var size=form1.size.value;
var paper=form1.paper.value;
var m2type;
var printperm2=33;
var setup=10;
var trim=5;

if (size=="A0"){m2type=0.999949;}
else if (size=="A1"){m2type=0.499554;}
else if (size=="A2"){m2type=0.24948;}

var m2total=qty*m2type;

var priceperm2;
if (paper=="Banner Polypropylene"){priceperm2=8.25;}
else if (paper=="Canvas Artist Satin"){priceperm2=49.32;}
else if (paper=="Gloss Photopaper 200gsm"){priceperm2=8.16;}
else if (paper=="Lustre Photopaper 200gsm"){priceperm2=8.40;}

var printcost=m2total*(priceperm2+printperm2);

var trimcost=trim*qty;

var subtotal=(printcost+setup+trimcost)*1.7;
var total=Math.round(subtotal*100)/100;
form1.total.value="$"+total;

var freight=30;

SetCookie("TOTALCOST", Math.round(subtotal*100)/100, 1);
SetCookie("products", "POSTER|Size : "+size+"|Stock : "+paper+"|Quantity : "+qty+"|PRICE = $"+Math.round(subtotal*100)/100+"|Less Discount = $%D%|Plus Freight (within Australia) = $"+freight, 1);
SetCookie("freight", freight, 1);
}