function calculate(f) 
{
var price_rub = 0;
var cena = 0;
var kolvo = 0;
var side1 = 0;
var side2 = 0;
var format = 0;
var paper = 0;
var cena_rub = 0;
var tir = 0;
format = f.format.value;
tir = f.tir.value;
side1 = f.side1.value;
side2 = f.side2.value;
paper = f.paper.value;

/*if (document.calculator.kolvox.value.length<1){
alert ("Укажите необходимое количество продукции");
document.calculator.kolvox.focus();
return false;	}
var i=0;
while (i < document.calculator.kolvox.value.length)
{
var ch = document.calculator.kolvox.value.charAt (i)  
if ("0">ch) {alert("Введите целое количество продукции"); return false;  } 
if (ch > "9") { alert("Введите целое количество продукции"); return false;  } 
i++;
}*/

if (paper=="1"){
switch (tir) 
{
case "1": 
switch (side2)  
{ case "1" : cena=74.10; break; 
  case "2" : cena=84.10; break;}break;
case "2": 
switch (side2)  
{ case "1" : cena=274.50; break; 
  case "2" : cena=324.50; break;}break;
case "3": 
switch (side2)  
{ case "1" : cena=1300.50; break; 
  case "2" : cena=1550.50; break;}break;
case "4": 
switch (side2)  
{ case "1" : cena=2177.00; break; 
  case "2" : cena=2797.00; break;}break;
case "5": 
switch (side2)  
{ case "1" : cena=5457.00; break; 
  case "2" : cena=6807.00; break;}break;
case "6": 
switch (side2)  
{ case "1" : cena=9087.00; break; 
  case "2" : cena=11337.00; break;}break;
case "7": 
switch (side2)  
{ case "1" : cena=17150.00; break; 
  case "2" : cena=19650.00; break;}break;
}//tir
}//if


if (paper=="2"){
switch (tir) 
{
case "1": 
switch (side2)  
{ case "1" : cena=75.50; break; 
  case "2" : cena=85.50; break;}break;
case "2": 
switch (side2)  
{ case "1" : cena=281.50; break; 
  case "2" : cena=331.50; break;}break;
case "3": 
switch (side2)  
{ case "1" : cena=1335.50; break; 
  case "2" : cena=1585.50; break;}break;
case "4": 
switch (side2)  
{ case "1" : cena=2247.00; break; 
  case "2" : cena=2797.00; break;}break;
case "5": 
switch (side2)  
{ case "1" : cena=5667.00; break; 
  case "2" : cena=7017.00; break;}break;
case "6": 
switch (side2)  
{ case "1" : cena=9437.00; break; 
  case "2" : cena=11687.00; break;}break;
case "7": 
switch (side2)  
{ case "1" : cena=17850.00; break; 
  case "2" : cena=20350.00; break;}break;
}//tir
}//if

if (paper=="3"){
switch (tir) 
{
case "1": 
switch (side2)  
{ case "1" : cena=77.00; break; 
  case "2" : cena=87.00; break;}break;
case "2": 
switch (side2)  
{ case "1" : cena=289.00; break; 
  case "2" : cena=339.00; break;}break;
case "3": 
switch (side2)  
{ case "1" : cena=1397.00; break; 
  case "2" : cena=1647.00; break;}break;
case "4": 
switch (side2)  
{ case "1" : cena=2370.00; break; 
  case "2" : cena=2920.00; break;}break;
case "5": 
switch (side2)  
{ case "1" : cena=6060.00; break; 
  case "2" : cena=7410.00; break;}break;
case "6": 
switch (side2)  
{ case "1" : cena=10100.00; break; 
  case "2" : cena=12350.00; break;}break;
case "7": 
switch (side2)  
{ case "1" : cena=19200.00; break; 
  case "2" : cena=21700.00; break;}break;
}//tir
}//if



if (paper=="4"){
switch (tir) 
{
case "1": 
switch (side2)  
{ case "1" : cena=79.00; break; 
  case "2" : cena=89.00; break;}break;
case "2": 
switch (side2)  
{ case "1" : cena=299.00; break; 
  case "2" : cena=349.00; break;}break;
case "3": 
switch (side2)  
{ case "1" : cena=1447.00; break; 
  case "2" : cena=1697.00; break;}break;
case "4": 
switch (side2)  
{ case "1" : cena=2470.00; break; 
  case "2" : cena=3020.00; break;}break;
case "5": 
switch (side2)  
{ case "1" : cena=6360.00; break; 
  case "2" : cena=7710.00; break;}break;
case "6": 
switch (side2)  
{ case "1" : cena=10600.00; break; 
  case "2" : cena=12850.00; break;}break;
case "7": 
switch (side2)  
{ case "1" : cena=20200.00; break; 
  case "2" : cena=22700.00; break;}break;
}//tir
}//if
	



				 
	

var result=cena;
result=Math.round(result*100)/100;		
f.price_rub.value=parseFloat(result);

}