function bildup(bild,bildname,alttext)
{

var undefined;

  if (bildname==undefined || (bildname==''))
  {bildname='www.lichtgmbh.de';}

  if (alttext==undefined || (bildname==''))
  {alttext='';}

  x=(screen.availWidth/2)-(800/2);y=(screen.availHeight/2)-(600/2);

  bildwert=window.open('','','resizable=1,width=360,height=600,top='+y+',left='+x+'');

  with (bildwert)
  {
    	focus();
    	document.open();

	document.write('<title>'+bildname+'</title>');
	document.write('<meta http-equiv="imagetoolbar" content="no">');
	document.write('<body bgcolor="#000000" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0" scroll="no" onload="opener.bildres(document.images[0].width+2,document.images[0].height+20)">')
	document.write('<center><a href="javascript:self.close()">');
	document.write('<img valign="middle" src="'+bild+'" border="0" alt="'+alttext+'"></a></center></body>')
	document.close();
  }
}

function bildres(x,y)
{
if (navigator.appName.toLowerCase() == 'microsoft internet explorer')
  {

 if ((navigator.userAgent.toLowerCase().indexOf('aol')==-1) && (navigator.userAgent.toLowerCase().indexOf('opera')==-1))
     {bildwert.resizeTo(x+12,y+31);}

 if (navigator.userAgent.toLowerCase().indexOf('opera')!=-1)
     {bildwert.resizeTo(x+12,y+31);}

 if (navigator.userAgent.toLowerCase().indexOf('aol')!=-1)
     {bildwert.resizeTo(x+4,y+4);}

  }


else
{
	if(navigator.appVersion.substring(0,1) < "5")
		{bildwert.resizeTo(x,y);}

	else
		{bildwert.resizeTo(x+8,y+28);}
}

wertx=(screen.availWidth/2)-(x/2);
werty=(screen.availHeight/2)-(y/2);

bildwert.moveTo(wertx,werty);
}
