function ProcessJourneyCost(form) {
            var result = JourneyCost(form.distance.value, form.mpg.value, form.fuel.value)
            if (!isNaN(result)) {
								                document.getElementById('JourneyCostResult').innerHTML = " In terms of fuel costs, based on your inputs this journey would cost you in the region of <font color=red>" + result.toFixed(2) +"</font>";
				            } else {
                document.getElementById('JourneyCostResult').innerHTML = "Please enter numerical values!";
            }
        }
    
 
	var Lig = 4.54609188;
var Gil = 0.219969157;
var Mik = 0.621371192;
var Kim = 1.609344;


function Gallons(FuelCost, Spend) {
    try {
        var Litres = (Spend/(FuelCost/100));
        return (Litres * Gil);
    } catch (Error) {
        return -1;
    }
}

function RealMPG(FuelCost, Spend, Miles) {
    try {
        var g = Gallons(FuelCost, Spend);
        return (Miles/g);
    } catch (Error) {
        return -1;
    }
}

function RequiredFuel(Miles, MPG) {
    try {
        return (Miles/MPG);
    } catch (Error) {
        return -1;
    }
}

function JourneyCost(Miles, MPG, FuelCost) {    
    try {
        var GallonsUsed;    
        GallonsUsed = (Miles/MPG);
        return (((GallonsUsed* Lig) * FuelCost)/100);
    } catch (Error) {
        return -1;
    }
}

function ToLitresPer100KM(MPG) {
    try {
        return (100/((MPG*Kim)*Gil));
    } catch (Error) {
        return Error;
    }
}

function ToMPG(LitresPer100KM) {
    try {
        return ((100/(LitresPer100KM * Gil)) * Mik);
    } catch (Error) {
        return -1;
    }
}

function ToMiles(KM) {
    try {
        return (KM * Mik);
    } catch  (Error) {
        return -1;
    }
}

function ToKM(Miles) {
    try {
        return (Miles * Kim);
    } catch (Error) {
        return -1;
    }
}