function logimage(targetfile)
{ 
 var s = '&language='+escape(navigator.language);
 s += '&javaEnabled='+escape(navigator.javaEnabled());
 s += '&screen='+screen.width+'x'+screen.height+'x'+(screen.colorDepth||screen.pixelDepth);
 
 document.write('<img border=0 src="http://www-cgi.uni-regensburg.de/~scn26902/cgi-bin/log.gif/'+targetfile+'?'+s+'">');
}