function validateKontaktform(myform) {
	msg = "";
	if(myform.firstname.value==""){
		msg += "Please enter a First name.\n";
	}
	if(myform.surname.value==""){
		msg += "Please enter a Surname.\n";
	}
	if(myform.email.value==""){
		msg += "Please enter your E-Mailadress.\n";
	}else{
		if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(myform.email.value)){
			//OK
		}else{
			msg += "Please enter a correct E-mailadress.\n";
		}
	}
	if(msg!=""){
		alert(msg);
		return false;
	}
}