function Validation(theForm)
{

  if (theForm.surname.value == "")
  {
    alert("You forgot to enter a name.");
    theForm.surname.focus();
    return (false);
  }
  
  if (theForm.address.value == "")
  {
    alert("You forgot to enter an address.");
    theForm.address.focus();
    return (false);
  }
  
  if (theForm.zip.value == "")
  {
    alert("You forgot to enter a zipcode.");
    theForm.zipcode.focus();
    return (false);
  }
  
  if (theForm.city.value == "")
  {
    alert("You forgot to enter the city you live in.");
    theForm.city.focus();
    return (false);
  }
  
  if (theForm.question.value == "")
  {
    alert("You forgot to ask your question.");
    theForm.question.focus();
    return (false);
  }
  
  if(!(EmailCheck(theForm.email.value)))
  {
    alert("The e-mail adress you provided is incorrect.");
    theForm.email.focus();
    return (false);
  }
  
  alert("Thank you for contacting us. We will get back to you as soon as possible.");
  return (true);
}

function EmailCheck(str){
	var count=0;
	pos=str.indexOf('@');
	if(pos<1||pos>str.length-4){
		pos=-1
	}
	while(pos!=-1){
		count++;
		pos=str.indexOf('@',pos+1);
	}
	tld=str.substring(str.lastIndexOf('.')+1,99);
	tld=tld.toLowerCase();
	if ((tld.length!=2&&tld!='com'&&tld!='net'&&tld!='org'&&tld!='gov'&&tld!='mil'&&tld!='int'&&tld!='nato'&&tld!='arpa'&&tld!='name'&&tld!='museum'&&tld!='coop'&&tld!='info'&&tld!='aero'&&tld!='biz'&&tld!='pro')||count!=1){
		return false
	}else{
		return true
	}
}