function isFilled(elm) {
 if(elm.value == "" ||
   elm.value == null)
 return false;
 else return true;
}

function isPhone(elm) {
 if(!isNaN(elm.value) && elm.value.length > 4 )
 return true;
 else return false;
}

function isReady(form) {

if(isFilled(form.name) == false) {
  alert("Please enter your name!");
  form.name.focus();
  return false;
  }
 
if(isFilled(form.message) == false) {
  alert("Please edit a message!");
  form.message.focus();
  return false;
  }
  
return true
}