function getresults()
{
var distance;
var distancekm;
var distancemiles;
var volume;
var volumelitres;
var volumeUSgallon;
var volumeUKgallon;
var US_MPG;
var UK_MPG;
var km_litre;
var litre_100km;
var q1;
var q2;

distance = Math.round(document.myForm.distance.value);


if (document.myForm.q1[0].checked == true) 
{
distancekm = Math.round(distance) * 1;
}

if (document.myForm.q1[1].checked == true) 
{
distancekm = Math.round(distance) * 1.609;
}
volume = Math.round(document.myForm.volume.value);
if (document.myForm.q2[0].checked == true) 
{
volumelitres = volume * 1;
}
if (document.myForm.q2[1].checked == true) 
{
volumelitres = volume * 3.78;
}
if (document.myForm.q2[2].checked == true) 
{
volumelitres = volume * 4.54;
}
distancemiles = distancekm / 1.609;
volumeUSgallon = volumelitres / 3.78;
volumeUKgallon = volumelitres / 4.54;
km_litre = distancekm / volumelitres;
litre_100km = Math.round(100 / km_litre * 100);

US_MPG = Math.round(distancemiles / volumeUSgallon * 100);
UK_MPG = Math.round(distancemiles / volumeUKgallon * 100);
document.myForm.US_MPG.value = US_MPG / 100;
document.myForm.UK_MPG.value = UK_MPG / 100;
document.myForm.litre_100km.value = litre_100km / 100;
}