/*
  validForm
  input: userForm - Form
*/

function validForm(userForm) {
  var firstname = userForm.firstname.value;
  var email = userForm.email.value;
  var message = userForm.message.value;
  var contact_phone = userForm.contact_phone.value;
  var company = userForm.company.value;
  
  var errfirstname ="";
  var erremail="";
  var errmsg = "";
  var errphone = "";
  var errcompany = "";

  if (firstname == "") {
    errfirstname = "Enter a firstname<br />";
  }
	 
  if (message == "") {
    errmsg += "Enter a message <br />";
  }
	 
  if (contact_phone == "") {
    errphone += "Enter a phone <br />";
  }
	 
  if (company == "") {
    errcompany += "Enter a company name <br />";
  }
	 
  if (email == "") {
    erremail += "Enter an email <br />";
  }
  else {
    // check for error
    re =  /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/;
	if (!re.test(email)) {
      erremail += "email is invalid";
    }
  }

  if (errfirstname == ""  && errmsg == "" && erremail == "") {
    return true;
  }
  else {
    document.getElementById('errfirstname').innerHTML = errfirstname;
    document.getElementById('errmsg').innerHTML = errmsg;
    document.getElementById('errphone').innerHTML = errphone;
    document.getElementById('errcompany').innerHTML = errcompany;
    document.getElementById('erremail').innerHTML = erremail;
    return false;
  }
}