<!-- hide from old browsers

function ClearForm (form)
{
	form.weight.value="";
	form.waist.value="";
	form.bodyfat.value="";
}

function VerifyForm(form)
{
	var Correct = true;

	if (form.weight.value == null || form.weight.value.length == 0 ||
	form.waist.value == null || form.waist.value.length == 0) {
	alert ("\nPlease fill in all of the form elements");
	Correct = false;
}

else {
	var TestWeight;
	var TestWaist;
	TestWeight = parseFloat(form.weight.value);
	TestWaist = parseFloat(form.waist.value);

if (isNaN (TestWeight))
{

	alert("\nMake sure to enter the weight\nas a number.");
	Correct = false;
	form.weight.value="";
}


if (isNaN (TestWaist))
{
	alert("\nMake sure to enter the waist size\nas a number.");
	Correct = false;
	form.waist.value="";
}

if (TestWeight <= 0)
{
	alert("\nCome on.  Enter a real weight.");
	Correct = false;
	form.weight.value="";
}

if (TestWaist <= 0)
{
	alert("\nCome on.  Enter a real waist size.");
	Correct = false;
	form.waist.value="";
}
}



if (Correct) {

	var BF;
	var BFPercent;

if (form.gender[0].checked)
{
	BF = -98.42 + 4.15*TestWaist - .082*TestWeight;
}
else
{
	BF = -76.76 + (4.15*TestWaist) - (.082*TestWeight);
}

BFPercent = BF / TestWeight;
BFPercent = BFPercent * 100;
BFPercent = Math.round(BFPercent);

form.bodyfat.value = BFPercent + "%";

}

}

// finish hiding from old browsers -->