
<!--

function bmi(weight, height) {

          bmindx = weight / (height * height);
          return bmindx;
}

function bmilbs(weightlbs, heightlbs) {

          bmilbsndx=(weightlbs / 2.2) / (heightlbs * .0254 * heightlbs * .0254);
          return bmilbsndx;
}


function checkformlbs(form) {

       if (form.weightlbs.value==null || form.weightlbs.value.length==0 || form.heightlbs.value==null || form.heightlbs.value.length==0){
            alert("\nPlease complete the form first");
            return false;
       }

       else if (parseFloat(form.heightlbs.value) <= 0 ||
                parseFloat(form.heightlbs.value) >=150 ||
                parseFloat(form.weightlbs.value) <= 0 ||
                parseFloat(form.weightlbs.value) >=1000) {
                alert("\nPlease enter values again. \nWeight in pounds and \nheight in pounds");
                ClearForm(form);
                return false;
       }
       return true;

}


function computeformlbsf(form) {

       if (checkformlbs(form)) {

       yourbmilbs=bmilbs(form.weightlbs.value, form.heightlbs.value);
       form.bmilbs.value=yourbmilbs;

       if (yourbmilbs > 44.6) {
          form.the_ratinglbs.value="Morbid obesity";
       }

       else if (yourbmilbs > 32.2 && yourbmilbs <= 44.6) {
          form.the_ratinglbs.value="Severe overweight";
       }

       else if (yourbmilbs > 27.2 && yourbmilbs <= 32.2) {
          form.the_ratinglbs.value="Overweight";
       }

       else if (yourbmilbs > 25.7 && yourbmilbs <= 27.2) {
          form.the_ratinglbs.value="Marginally overweight";
       }

       else if (yourbmilbs > 19.0 && yourbmilbs <= 25.7) {
          form.the_ratinglbs.value="Normal weight";
       }

       else if (yourbmilbs  <= 19.0) {
          form.the_ratinglbs.value="Underweight";
       }

}
function ClearForm(form){

    form.weightlbs.value = "";
    form.heightlbs.value = "";
    form.bmilbs.value = "";
    form.the_ratinglbs.value = "";

}

      return;
}

//  -->