function Passwort() {
var pwfenster = window.open('ltab_pw.html', 'temp', 'width=400, height=150, left=300, top=200, dependent=yes, resizable=1');
}

function Abfrage() {
var pw = "ltabsikr";
var browser = navigator.userAgent.toLowerCase();
var opera = (browser.indexOf("opera") != -1);

UserEingabe = this.document.Formular.Eingabe.value;
	if(UserEingabe != pw) {
		alert("Falsches Passwort!"); 
		this.document.Formular.Eingabe.value = "";
		this.document.Formular.Eingabe.focus();
	} else {
		if (opera) {
		opener.location.href = 'ltab_op.html' ;
		window.close();
		}
		else {
		opener.location.href = 'ltab.html' ;
		window.close();
		}
	}
}