var sina = null;

function fenster_oeffnen(fenster) {
	if (sina != null && !sina.closed) {
        sina.focus();
        return;
    }
    sina = window.open("sina.html", "sina",
        "top = 150, left = 150, width = 400, height = 370, " +
        "location = no, directories = no, menubar = no, resizable = no, " +
        "scrollbars = no, status = no, titlebar = no, toolbar = no");
}

function beenden() {
	
   if (sina != null && !sina.closed) {
   		alert('beenden if');
   		sina.close();
   		return;
	}  
}

function schreibeDatum (lastMod) {
	if(lastMod == null)
		return new Date();		
	
	var dLM = new Date(Date.parse(lastMod));

    var day = new Array("Sonntag","Montag","Dienstag",
            "Mittwoch","Donnerstag","Freitag","Samstag");
    var month = new Array("Januar","Februar","März","April","Mai","Juni",
            "Juli","August","September","Oktober","November","Dezember");

    var date = dLM.getDate();
    var day = day[dLM.getDay()];
    var year = dLM.getFullYear();
	var month = month[dLM.getMonth()];
    var hours = dLM.getHours();
    var minutes = dLM.getMinutes();
    var seconds = dLM.getSeconds();

    if (date<10) date = "0"+date;
    if (month<10) month = "0"+month;
    if (hours<10) hours = "0"+hours;
    if (minutes<10) minutes = "0"+minutes;
    if (seconds<10) seconds = "0"+seconds;
	
	return date+". "+month+" "+year;
}

function toggleState (element_name) {
	if(document.getElementById(element_name).style.display == 'none') {
		document.getElementById(element_name).style.display='block';
	} else {
		document.getElementById(element_name).style.display='none';
	}
}