function changeLanguage() {
	if(document.getElementById("lingua").selectedIndex ==0) {
		//inglese
		document.location="inglese.php";
		}
	else if(document.getElementById("lingua").selectedIndex ==1) {
		//inglese
		document.location="italiano.php";
		}
	else if(document.getElementById("lingua").selectedIndex ==2) {
		//inglese
		document.location="polacco.php";
		}
	else if(document.getElementById("lingua").selectedIndex ==3) {
		//es
		document.location="spagnolo.php";
		}
	}