function putFocus() {
	var f=document.login;
	if (f.length > 0) {
		f.username.focus();
	}
}

var w;

function validate() {
	var r=document.login;
	var maxw=screen.availWidth-20;
	var maxh=screen.availHeight-120;
	var IE = document.all;

	if (r.username.value.length < 2) {
		alert("Username troppo corta");
		r.username.focus();
		return false;
	}
	if (r.password.value.length < 4) {
		alert("Password troppo corta");
		r.password.focus();
		return false;
	}
	r.username.focus();
	w=window.open("","inforeport","location=no, directories=no, status=yes, menubar=yes, scrollbars=yes, resizable=yes, copyhistory=yes, left=0, top=0, width="+maxw+", height="+maxh);

	if (IE) {
		setTimeout('goNewWin(w)', 150);
		return false;
	} else {
		return true;
	}
}

function goNewWin(winPtr) {
	var f=document.login;
	f.submit();
    f.username.value="";
    f.password.value="";
	winPtr.focus();
}