<!-- Vérification des champs obligatoires du formulaire
function verifen() 
{ 
	if (document.captchaForm.subject.value == "")
	{
		alert ('Please choose a subject');
		document.captchaForm.subject.focus();
		return false;
	}
	if (document.captchaForm.name.value == "")
	{
		alert ('Please enter your name');
		document.captchaForm.name.focus();
		return false;
	}
	if(document.captchaForm.firstname.value == "")
	{
		alert ('Please enter your firstname');
		document.captchaForm.firstname.focus();
		return false;
	}
	if(document.captchaForm.email.value == "")
	{
		alert ('Please enter your e-mail address');
		document.captchaForm.email.focus();
		return false;
	}	
	else {return true;}
}
//-->