function Calculate(theform){
	var distance = theform.myDistance;
	var calories = theform.myCalories;
	var fat = theform.myFat;
	var dollars = theform.myDollars;
	var co2 = theform.myCO2;

	if (!IsNumeric(distance.value)){
		alert("You can only enter a numeric value.");
		distance.focus();
	}
	else{
		//var number = 5.12345;
		//fat.value = (Math.round(number * 4) / 4).toFixed(2);
		var myDistance = distance.value;
		var number = .25;
		var len;
		calories.value = (myDistance * 32.9).toFixed(2);
		fat.value = (calories.value / 3400).toFixed(2);
		//fat.value = (fat.value / number).toFixed(2);
		dollars.value = (myDistance * .22).toFixed(2);
		co2.value = (myDistance * 1);

		len = co2.value.length;
		switch (len)
		{
			case 1:
			  co2.value = "000"+co2.value;
			  break;
			case 2:
			  co2.value = "00"+co2.value;
			  break;
			case 3:
			  co2.value = "0"+co2.value;
			  break;
		}

		if (calories.value=="NaN"){
			calories.value = 0;
		}
	}
}

function SetMyDistance(dis){
	if (dis.value==""){
		dis.value = 0;
	}
}