function checkComma(s)
{var x;
 x = s.indexOf(',');
 if (x > -1) s = s.substring(0, x) + '.' + s.substring(x + 1, s.length);
 return s;}
 
 function Calc_2()
 { with (document.calc_form_2)
   {price_gbo.value = checkComma(price_gbo.value);
    price_b.value   = checkComma(price_b.value);
    price_g.value   = checkComma(price_g.value);
	benzin_100.value = checkComma(benzin_100.value);
	way_day.value = checkComma(way_day.value);
	result.value=Math.round(price_gbo.value/((price_b.value-price_g.value*1.15)*((benzin_100.value / 100) * way_day.value)));
 }}