function calculate(obj) {
   var w = obj.wt.value / 2.2
   var h = ((obj.ft.value * 12) * .0254) + (obj.it.value * .0254)
   obj.bmi.value = Math.round(w / h / h * 10) / 10
   if (obj.bmi.value < 20) {
      obj.status.value = "Underweight"
   }
   else if (obj.bmi.value < 27) {
      obj.status.value = "Healthy Weight"
   }
   else if (obj.bmi.value < 30) {
      obj.status.value = "Overweight.  Call Medical Weight Loss Clinic at (800) 340-DIET"
   }
   else if (obj.bmi.value < 40) {
      obj.status.value = "Severely Overweight / Obese.  Call Medical Weight Loss Clinic at (800) 340-DIET"
   }
   else
      obj.status.value = "Severely Obese.  Call Medical Weight Loss Clinic at (800) 340-DIET"
}