Currently Being ModeratedNov 11, 2012 8:14 AM (in response to detour12)
You can do it but I have found Tiger to be faster than Panther even on a G3. So I recommend fixing what's wrong vs. downgrading.
Wireless will work but only 802.11b is supported on an iBook.
A G3 is going to be painfully slow on most websites no matter what OS you use. Those that require Flash or updated Java are not likely to work at all.