function login(){
	if(document.form_login.Username.value == ""){
		alert("Inserire lo username");
		document.form_login.Username.focus();
	}else
	if(document.form_login.Password.value == ""){
		alert("Inserire la password");
		document.form_login.Password.focus();
	}else{
		document.form_login.azione.value='login';
		document.form_login.submit();
	}
}

function login_area(){
	if(document.form_login_area.Username.value == ""){
		alert("Inserire lo username");
		document.form_login_area.Username.focus();
	}else
	if(document.form_login_area.Password.value == ""){
		alert("Inserire la password");
		document.form_login_area.Password.focus();
	}else{
		document.form_login_area.azione.value='login';
		document.form_login_area.submit();
	}
}

function cerca(){
	if(document.form_ricerca.word.value == ""){
		alert("Specificare una parola o frase");
	}else{
		document.form_ricerca.submit();
	}
}