function for converting kilograms to pounds and ounces

I'd like to convert kilos into pounds and ounces e.g. if a user enters 10 kg then the function should return 22 lb and 0.73 oz

Any ideas?

Based on @dlamblin's answer, here's a function that returns the pounds and ounces in a structure.

function kToLbs(pK) {
    var nearExact = pK/0.45359237;
    var lbs = Math.floor(nearExact);
    var oz = (nearExact - lbs) * 16;
    return {
        pounds: lbs,
        ounces: oz
    };
}

var imperial = kToLbs(10);
alert("10 kg = " + imperial.pounds + " lbs and " + imperial.ounces + " oz.");

Here's how you would go the other way:

function lbsAndOzToK(imperial) {
    var pounds = imperial.pounds + imperial.ounces / 16;
    return pounds * 0.45359237;
}

var kg = lbsToK({ pounds: 10, ounces: 8 });
alert("10 lbs and 8 oz = " + kg + " kg.");