function validera(){
	if (form.namn.value == ""){
		alert("Fyll i ditt namn.");
		form.namn.focus();
		return (false);
	}
	if (form.adress.value == "" && form.telefon.value == "" && form.epost.value == ""){
		alert("Fyll i adress, telefon eller e-post.");
		form.adress.focus();
		return (false);
	}
	if (form.epost.value != ""){
		//Fixat mellanbokstav 5/3-02. Godkänner kent.j.nilsson@m.xx.se, även k@m.se och -@-.se
		em_val = /^[a-z0-9_-]+(\.[a-z0-9_-]{1,})*@[a-z0-9_-]{1,}(\.[a-z0-9_-]{2,})*(\.[a-z]{2,4})$/i;
		if (em_val.test(form.epost.value) == false){
			alert("Kontrollera din e-post-adress.");
			form.epost.focus();
			return (false);
		}
	}
}