var d = document;
	function mile2kilometre() {
		var miles = d.getElementById('miles').value;
		var kilometres = d.getElementById('kilo').value;
		var result = miles * 1.609344;
		d.getElementById('kilo').value = result;
	}
	
	function kilometre2mile() {
		var miles = d.getElementById('miles').value;
		var kilometres = d.getElementById('kilo').value;
		var result = kilometres * 0.621371192;
		d.getElementById('miles').value = result;
	}

	function pound2kilo() {
		var pound = d.getElementById('pounds').value;
		var kilo = d.getElementById('kg').value;
		var result = pound * 0.45359237;
		d.getElementById('kg').value = result;
	}
	
	function kilo2pound() {
		var pound = d.getElementById('pounds').value;
		var kilo = d.getElementById('kg').value;
		var result = kilo * 2.20462262;
		d.getElementById('pounds').value = result;
	}
	
	function fah2deg() {
		var fah = d.getElementById('fah').value;
		var deg = d.getElementById('cel').value;
		var result = (fah - 32) * (5/9);
		d.getElementById('cel').value = result;
	}
	
	function deg2fah() {
		var fah = d.getElementById('fah').value;
		var deg = d.getElementById('cel').value;
		var result = (deg * (9/5)) + 32;
		d.getElementById('fah').value = result;
	}
	
	function gal2lit() {
		var gal = d.getElementById('gal').value;
		var lit = d.getElementById('lit').value;
		var result = gal * 3.7854118;
		d.getElementById('lit').value = result;
	}
	
	function lit2gal() {
		var lit = d.getElementById('lit').value;
		var gal = d.getElementById('gal').value;
		var result = lit * 0.264172051;
		d.getElementById('gal').value = result;
	}