function Form (form){
if (form.email.value =="") {
	alert("Please go back and enter an email address.");
	form.email.focus();
	return false;
}	
if (form.email.value.length > 0 && form.email.value.search(/^\w+((-\w+)|(\.\w+))*\@\w+((\.|-)\w+)*\.\w+$/) == -1){
		alert("The email address entered is incorrect.");
		form.email.focus();
		return false;
}
if (form.messaggio.value =="") {
	alert("Please go back and enter a message.");
	form.messaggio.focus();
	return false;
}	
}