function checkform(formObj) {

if (emptyField(formObj.first_name_required))
   alert ("Please enter your first name.");

else if (emptyField(formObj.last_name_required))
   alert ( "Please enter last name.");

else if (emptyField(formObj.mailreply))
    alert("Please enter your email.");

else if (emptyField(formObj.prop_name_required))
    alert("Please enter property name.");

else if (emptyField(formObj.phone_required))
    alert("Please enter your phone number.");

else return true;

return false;

}



//Check to see if field is empty

function emptyField(textObj) {
// return false; for debugging
if (textObj.value.length == 0) return true;

  for (var i = 0; 1 < textObj.value.length; ++i) {

     var ch = textObj.value.charAt(i);
     if (ch != '' && ch != '\t') return false;

  }
  return true;

}