function ShowBMI(){
		var feet = parseInt(document.forms[0].ft.value)
		var inches = parseInt(document.forms[0].inch.value)

  if (feet != 0 && feet != 1 && feet != 2 && feet != 3 && feet != 4 
							&& feet != 5 && feet != 6 && feet != 7 && feet != 8)
      {alert ("Please correct the feet field.");
		 return;}

  if (inches != 0 && inches != 1 && inches != 2 && inches != 3 && inches != 4 
							&& inches != 5 && inches != 6 && inches != 7 && inches != 8 && inches != 9 
        && inches != 10 && inches != 11 && inches != 12)
				{alert ("Please correct the inches field.");
				 return;}

		inches = (feet * 12)+ inches
		if (inches == 0) {
			alert("Please enter height in feet and inches.");
			return;
		}

		var meters = inches * 2.54 / 100 
		var kg = document.forms[0].wt.value / 2.2

	 if (kg < 0 || kg > 455)
		{ alert ("Please correct the weight field.");
		  return;}

		var BMI = kg / (meters * meters)
	 BMI = (BMI * 100) + .5
  BMI = Math.floor(BMI)
		BMI = BMI / 100

      if (document.forms[0].gender[0].checked) {
         gender = "male";
      }
      else if (document.forms[0].gender[1].checked) {
         gender = "female";
      }

//  var gender = "male"

  var rf = document.forms[0].risk.value;
  if (gender == "male") {
     if (BMI < 20.7) {
        rf = "Underweight.  The lower the BMI the greater the risk.";
     }
     else if ((BMI > 20.7) && (BMI <=26.4)) {
        rf = "Normal, very low risk";
     }
     else if ((BMI > 26.4) && (BMI <= 27.8)) {
        rf = "Marginally overweight, some risk";
     }
     else if ((BMI > 27.8) && (BMI <= 31.1)) {
        rf = "Overweight. moderate risk";
     }
     else if ((BMI > 31.1) && (BMI <= 45.4)) {
        rf = "Severe overweight, high risk";
     }
     else if (BMI > 45.4) {
        rf = "Morbid obesity, very high risk";
     }
  }

  if (gender == "female") {
     if (BMI < 19.1) {
        rf = "Underweight.  The lower the BMI the greater the risk.";
     }
     else if ((BMI > 19.1) && (BMI <=25.8)) {
        rf = "Normal, very low risk";
     }
     else if ((BMI > 25.8) && (BMI <= 27.3)) {
        rf = "Marginally overweight, some risk";
     }
     else if ((BMI > 27.3) && (BMI <= 32.2)) {
        rf = "Overweight. moderate risk";
     }
     else if ((BMI > 32.2) && (BMI <= 44.8)) {
        rf = "Severe overweight, high risk";
     }
     else if (BMI > 44.8) {
        rf = "Morbid obesity, very high risk";
     }
  }

  document.forms[0].bmi.value = BMI
  document.forms[0].risk.value = rf
	}