function boo_FormRicercaCheck() {
	var str_Pattern = document.FormRicerca.Pattern.value; //.trim()
	if (str_Pattern == "") {
		alert("Insert search pattern.");
		return false;
	} else {
		document.FormRicerca.Pattern.value = str_Pattern;
		document.FormRicerca.submit();
		return true;
	}
} //fine boo_FormRicercaCheck()