Hi, I tested this on Mozilla 1.1 on Mandrake 8.2. It doesn't crash, but Mozilla's CPU usage rises to > 95%. The browser becomes slow but remains responsive and the offending window/tab can be closed to restore normal service. Regards, Jim Halfpenny Hi, I'm new here so I don't know if I posted this in the correct list... I've found out that some simple CSS-code can crash Netscape 6 and 7. ...