function calcEnglish(form, ft, in, st, lb ) {
   if ((! in) || isNaN(in))
     in = 0;
   if ((! lb) || isNaN(lb))
     pounds = 0;
   TotalInches = eval(ft*12) + eval(in);
   TotalPounds = eval(st*14) + eval(lb);
   var bmi = Math.round(TotalPounds * 703 * 10 / TotalInches / TotalInches) / 10;
   if (isNaN(bmi)) bmi = "";
   form.calcval.value = bmi;
}

function calcMetric(form, meters, kilograms) {   
   var bmi;
   bmi = Math.round(kilograms * 10 / meters / meters) / 10;
   if (isNaN(bmi)) bmi = "";
   form.calcval.value = bmi;
}