function Fmt(x) { 
var v
if(x>=0) { v=''+(x+0.0005) } else { v=''+(x-0.0005) }
return v.substring(0,v.indexOf('.')+3) 
}

  function compute(form) {

if((form.TDD.value==null)||(form.TDD.value=="")||(isNaN(form.TDD.value))){
alert('Please enter the Total Daiy Dose of Insulin.');
return false;
}

var SCO= 0
var ISF= 0
var SCO= 1*form.SCO.value
form.ISF.value =Fmt(SCO/(1*form.TDD.value));
var ISF= form.ISF.value

form.Correct.value = Fmt((1*form.CBG.value-1*form.TargBG.value)/ISF) ;

form.CARB.value =Fmt(450/(1*form.TDD.value));






}