function Lightcol(obj, new_style) {
    obj.className = new_style;}


function mod(div,base) {
return round((div - ((div/base)*base)));
}

function round (x) {
return Math.round(x*10)/10;
}

function calcBMIwomen() {
var w = document.bmi.weight.value * 1;
var HeightFeetInt = document.bmi.htf.value * 1;
var HeightInchesInt = document.bmi.hti.value * 1;
HeightFeetConvert = HeightFeetInt * 12;
h = HeightFeetConvert + HeightInchesInt;
displaybmi = round(((w * 703) / (h * h)));
var rvalue = true;
if ( (w <= 35) || (w >= 1500)  || (h <= 48) || (h >= 120) ) {
alert ("Invalid data.  Please check and re-enter!");
rvalue = false;
}
if (rvalue) {
if (HeightInchesInt > 11) {
reminderinches = mod(HeightInchesInt,12);
document.bmi.hti.value = reminderinches;
document.bmi.htf.value = HeightFeetInt + 
((HeightInchesInt - reminderinches)/12);
document.bmi.answer.value = displaybmi;
}
if (displaybmi <19.1) 
document.bmi.comment.value = "Underweight. The lower BMI the greater the risk";
if (displaybmi >=19.1 && displaybmi <=25.8) 
document.bmi.comment.value = "Normal. Very low risk";
if (displaybmi >=25.9 && displaybmi <=27.3) 
document.bmi.comment.value = "Marginally overweight. Some risk";
if (displaybmi >=27.4 && displaybmi <=30) 
document.bmi.comment.value = "Overweight. Moderate risk";
if (displaybmi >=30.1 && displaybmi <=34.9) 
document.bmi.comment.value = "Severely overweight. High risk";
if (displaybmi >=35 && displaybmi <=39.9) 
document.bmi.comment.value = "Obesity Class II - Candidate for surgery with comorbities";
if (displaybmi >40) 
document.bmi.comment.value = "Obesity Class III - Morbid obesity. Very high risk. Canditate for surgery";
document.bmi.answer.value = displaybmi; }
return rvalue;
}

function calcBMImen() {
var w = document.bmi.weight.value * 1;
var HeightFeetInt = document.bmi.htf.value * 1;
var HeightInchesInt = document.bmi.hti.value * 1;
HeightFeetConvert = HeightFeetInt * 12;
h = HeightFeetConvert + HeightInchesInt;
displaybmi = round(((w * 703) / (h * h)));
var rvalue = true;
if ( (w <= 35) || (w >= 1500)  || (h <= 48) || (h >= 120) ) {
alert ("Invalid data.  Please check and re-enter!");
rvalue = false;
}
if (rvalue) {
if (HeightInchesInt > 11) {
reminderinches = mod(HeightInchesInt,12);
document.bmi.hti.value = reminderinches;
document.bmi.htf.value = HeightFeetInt + 
((HeightInchesInt - reminderinches)/12);
document.bmi.answer.value = displaybmi;
}
if (displaybmi <20.7) 
document.bmi.comment.value = "Underweight. The lower BMI the greater the risk";
if (displaybmi >=20.7 && displaybmi <=26.4) 
document.bmi.comment.value = "Normal. Very low risk";
if (displaybmi >=26.5 && displaybmi <=27.8) 
document.bmi.comment.value = "Marginally overweight. Some risk";
if (displaybmi >=27.9 && displaybmi <=30) 
document.bmi.comment.value = "Overweight. Moderate risk";
if (displaybmi >=30.1 && displaybmi <=34.9) 
document.bmi.comment.value = "Severely overweight. High risk";
if (displaybmi >=35 && displaybmi <=39.9) 
document.bmi.comment.value = "Obesity Class II - Candidate for surgery with comorbities";
if (displaybmi >40) 
document.bmi.comment.value = "Obesity Class III - Morbid obesity. Very high risk. Canditate for surgery";
document.bmi.answer.value = displaybmi; }
return rvalue;
}