function validateForm(form) {
	
	if(form.email.value == "") {
		alert("Du skal angive din e-mail adresse!");
		form.email.focus();
		return false;
	}
	blockedDomains = Array();
	
	pos = form.email.value.indexOf('@')+1;
	for (i = 0; i < blockedDomains.length; i++)
	{
		if (form.email.value.substr(pos).toLowerCase() == blockedDomains[i].toLowerCase())
		{
			alert("Du kan ikke anvende en email adresse fra " + blockedDomains[i]);
			return false;
		}
	}
	
	return true;
}