function calculatePrice(form){
opt1=form.pricefor[0].checked;
opt2=form.pricefor[1].checked;
opt3=form.pricefor[2].checked;
opt4=form.pricefor[3].checked;
total=0;
for(i=1;i<=41;i++){
eval("totalqty=form.crt"+i+".value*1");
if(totalqty>0){
total=total+totalqty;
}	
}	
total=total*1;
totqty=form.qtytotal.value;
totprice=form.pricetotal.value;
if(totqty=="")
totqty=0;
totqty=totqty*1;	
if(totprice=="")
totprice=0;
totprice=totprice*1;	
if(opt1){
temp=form.qty1.value;
tempprice=form.price1.value;	
form.qty1.value=total;		
price=total*4.25;
form.price1.value=price;
}else if(opt2){
temp=form.qty2.value;
tempprice=form.price2.value;
form.qty2.value=total;
price=total*3.00;
form.price2.value=price;
}else if(opt3){
temp=form.qty3.value;
tempprice=form.price3.value;
form.qty3.value=total;
price=total*6.25;
form.price3.value=price;
}else{
temp=form.qty4.value;	
tempprice=form.price4.value;
form.qty4.value=total;
price=total*6.25;
form.price4.value=price;
}
form.qtytotal.value=(totqty*1)+(total*1)-(temp*1);
form.pricetotal.value=(totprice*1)+(price*1)-(tempprice*1);		
}

function clearCrt(form){
for(i=1;i<=41;i++){
eval("form.crt"+i+".value=0");
}	
}