function calk_sum(meters, factura, corners, svetil, trubs){
	//var facturas = new Array('mat_bel','mat_col');
	//var facturas['mat_bel'] = new Array(1100, 740, 600);
	var facturas = [
[900.00, 600.00, 500.00, 450.00],
[1000.00, 700.00, 600.00, 600.00],
[950.00, 650.00, 600.00, 500.00],
[1100.00, 750.00, 700.00, 650.00],
[900.00, 650.00, 550.00, 500.00],
[900.00, 700.00, 600.00, 550.00],
[700.00, 600.00, 500.00, 450.00],
[800.00, 750.00, 650.00, 600.00],
[75000.00, 650.00, 550.00, 550.00],
[1000.00, 700.00, 650.00, 600.00],
[1350.00, 1120.00, 910.00, 910.00],
[1350.00, 1170.00, 950.00, 950.00],
[1350.00, 1120.00, 990.00, 990.00],
[1350.00, 1120.00, 990.00, 990.00]
/*          [1100, 740, 600],
          [1200, 850, 750],
          [1200, 825, 660],
          [1245, 1040, 750],
          [1160, 790, 640],
          [1200, 820, 660],
          [1150, 770, 600],
          [1200, 850, 780],
          [1200, 820, 660],
          [1300, 870, 720],
          [1650, 1120, 910],
          [1720, 1170, 950],
          [1650, 1120, 990],
          [1650, 1120, 990]*/
	];

	var cena_ugol = new Array(80, 90, 100);
	var cena_svet = 350;
	var cena_trub = 300;
	var itog_calk, svet, ugol, trub = 0;


	if(meters > 20){
		cena = meters * facturas[factura][3];
	}else if(meters > 10){
		cena = meters * facturas[factura][2];
	}else if(meters > 5){
		cena = meters * facturas[factura][1];
	}else{
		cena = meters * facturas[factura][0];
	}


	if(corners > 10){
		ugol = corners * cena_ugol[1];
	}else if(corners > 20){
		ugol = corners * cena_ugol[2];
	}else{
		ugol = corners * cena_ugol[0];
	}

	svet = cena_svet * svetil;
	trub = cena_trub * trubs;

	itog_calk = cena + svet + ugol + trub;

	document.getElementById('itog').innerHTML = itog_calk+" рублей";
}