<!-- Do not copy any part of this script without permission; James T. Griffing, MS, BS; http://www.exrx.net //--><!-- 
function calc (form) {
var W, H, S
W=form.Weight.value/form.WeightUnit.options[form.WeightUnit.selectedIndex].value
H=form.Height.value*form.HeightUnit.options[form.HeightUnit.selectedIndex].value
S=form.Sex.options[form.Sex.selectedIndex].value
L= W - W*form.Height.value/100
  if (H==0) {
     form.BMR.value = Math.round(370 + 21.6*L)
}
  if (H>0 && S=="Male") {
     form.BMR.value = Math.round(66.473 + 13.751*W + 5.0033*H - 6.755*form.Age.value)
}
  if (H>0 && S=="Female") {
     form.BMR.value = Math.round(655.0955 + 9.463*W + 1.8496*H - 4.6756*form.Age.value)
}
form.TotalActivity.value = 1*form.Resting.value+1*form.VeryLight.value+1*form.Light.value+1*form.Moderate.value+1*form.Heavy.value
  if (form.TotalActivity.value != 24) {
     alert("Sum of activity hours must equal 24 hours. Your sum is " + form.TotalActivity.value) 
}
form.TotalCalories.value = Math.round(form.BMR.value/24*(form.Resting.value*1+(form.VeryLight.value*1.5)+(form.Light.value*2.5)+(form.Moderate.value*5)+(form.Heavy.value*7)))
form.ActivityCalories.value = form.TotalCalories.value-form.BMR.value
}
//--> 