function showImage(img, description, x, y) {
x = x + 35;
y = y + 80;
w = self.open("","Screenshot","resizable=yes,screenX=0,screenY=0,width=" + x + ",height=" + y);
var filename = img.src;
filename = filename.replace(/-t/,"");
with (w.document) {
open();
write('OFB Kurzbeschreibung<\/title><\/head>');
write('<body><img src="' + filename + '" name="image_big"><br>');
write('<font face="Verdana,Arial,Helvetica" size="1" color="#0000FF"><div align="center"><b>' + description + '<\/b><\/div><\/font><form><div align="right">');
write('<input type="button" value="Close window" name="closeBtn" onClick="self.close()">');
write('<\/form><\/div><\/body><\/html>');
close();
}
w.focus();
}