function van_calculator(c)
{

var bG=document.getElementById(c).van_private_use.value;
var bQ=document.getElementById(c).year_signif.value;
var bb=0;
var bc=0;

if(bG =="no" || bQ =="yes"){bb="0"; bc="0";}
else{
	bb=(bG=="yes" && bQ=="no"?"3000":"0");
	bc=(bG=="yes" && bQ=="no"?"500":"0");
}

document.getElementById(c).van_benefit.value=format_number_output(bb,'0',',','£');
document.getElementById(c).van_fuel_benefit.value=format_number_output(bc,'0',',','£');

return false;
}