// browser detection
browserName=navigator.appName; 
browserVer=parseInt(navigator.appVersion);
if ((browserName=="Netscape" && browserVer>=3) || (browserName=="Microsoft Internet Explorer" && browserVer>=4)) browser = 1;

// today's date
function heute(ort)
	{
	var today=new Date();
	var display_value = ort + ", " + 
	today.getDate() + ". " +
	(today.getMonth()+1) + ". 19" + today.getYear();
	document.write(display_value);
	show_time=true;
	}

// image switching
function lightUp(imgName,txt)
	{
	if (browser)
		{
		document[imgName].src = eval(imgName + "up.src");        
		window.status = txt;
		}
	}

function turnOff(imgName)
	{
   if (browser)
   	{
		document[imgName].src = eval(imgName + "off.src");        
		window.status = " ";
		}
	}

// status bar text
function statusOn(txt)
	{
	if (browser) window.status = txt;
	}

function statusOff()
	{
   if (browser) window.status = "";
	}


// study zoom
function zoom(file)
	{
	if (browser) window.open('bilder/'+file+'.gif','BilderZoom','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width=600,height=500');
	else parent.top.location.href = 'bilder/'+file+'.gif';
	}

function zoom2(file)
	{
	if (browser) window.open('bilder/'+file+'.gif','BilderZoom','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no,width=420,height=530');
	else parent.top.location.href = 'bilder/'+file+'.gif';
	}
function zoom3(file)
	{
	if (browser) window.open('bilder/'+file+'.gif','BilderZoom','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no,width=390,height=550');
	else parent.top.location.href = 'bilder/'+file+'.gif';
	}

// popup
function openwin1(url)
	{
	if (browser) window.open(url,'awindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width=460,height=505');
	}

function openwin2(url)
	{
	if (browser) window.open(url,'awindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no,width=610,height=450');
	}